Refereed papers in 1981-1989

1. Oja,H. (1981). On location, scale, skewness and kurtosis of univariate distributions. Scandinavian Journal of Statistics 8 ,154-168.
2. Oja,H. (1981). Two location and scale-free goodness-of-fit tests. Biometrika 68, 3, 637-640.
3. Oja, H. (1983). New tests for normality. Biometrika 70, 1, 297-299.
4. Oja, H. (1983). Descriptive statistics for multivariate distributions. Statistics and Probability Letters 1,327-332.
5. Oja,H. and Niinimaa, A. (1985). Asymptotical properties of the generalized median in the case of multivariate normality. Journal of the Royal Statistical Society B 47, 2, 372
6. Oja, H.(1985). Partial ordering of distributions. in: Encyclopedia of Statistical Science, eds. Kotz, S., Johnson, N. L. and Read, C.P., Wiley.
7. Oja, H.(1987). On permutation tests in multiple regression and analysis of covariance problems. Australian Journal of Statistics 29,81-100.
8. Oja, H. and Nyblom, J.(1989). On bivariate sign tests. Journal of the American Statistical Association 84, 249-259.

1990-1994

9. Niinimaa, A., Oja, H. and Tableman, M. (1990). The finite-sample breakdown point of the Oja bivariate median and of the corresponding half-samples version. Statistics and Probability Letters 10, 325-328.
10. Rantakallio, P. and Oja, H. (1990). Perinatal risk for infants of unmarried mothers during 20 years. Early Human Development, 22, 157-169.
11. Rantakallio, P., Hartikainen-Sorri, A.L., Sipila, P., Oja, H. ElSaid, U., and Koiranen, M. (1990). Computer-based perinatal risk prediction in a geographically defined parturient population - An intervention study. Pediatric Research, 28, 305-305
12. Oja, H., Koiranen, M. and Rantakallio, P. (1991). Fitting mixture models to birth weight data: a case study. Biometrics, 47, 883-897.
13. Rantakallio,P., Oja,H. and Koiranen, M. (1991). Has intrauterine weight gain curve changed in shape? Pediatric & Perinatal Epidemiology, 5, 201-220.
14. Brown, B.M., Hettmansperger, T.P., Nyblom, J. and Oja, H. (1992). On certain bivariate sign tests and medians. Journal of the American Statistical Association 87, 127-135.
15. Niinimaa, A., Oja, H. and Nyblom, J. (1992). Algorithm AS 277: The Oja bivariate median. Applied Statistics 41, 611-617.
16. Hettmansperger, T.P., Nyblom, J. and Oja, H. (1992). On multivariate notions of sign and rank. L1-Statistical Analysis and Related Methods.Ed. by Y. Dodge. Amsterdam: Elsevier.
17. Sipilä, P., Hartikainen-Sorri, A-L., Oja, H. and von Wendt, L. (1992). Perinatal outcome of pregnancies complicated by vaginal bleeding. British Journal of Obstetrics and Gynaecology 99, 959-963..
18. Isohanni, M., Oja, H., Rantakallio, P., Moilanen, I. and Koiranen, M. (1993). The relation of the teenage smoking and alcohol use, with special reference to the deficient family background. Scandinavian Journal of Social Medicine, 21, 24-30.
19. Alho, O.P., Kilkku, O., Oja, H., Koivu, M. and Sorri, M. (1993). Control of the temporal aspect when considering risk factors for acute otitis media. Archives of Otolaryngology - Head & Neck Surgery, 119, 444-449.
20. Hettmansperger,T.P., Nyblom , J. and Oja, H. (1994). Affine invariant multivariate one-sample sign test. Journal of the Royal Statistical Society, Series B, 56, 221-234.
21. Hettmansperger, T.P. and Oja, H. (1994). Affine invariant multivariate multisample sign tests. Journal of the Royal Statistical Society, Series B, 56, 235-249.
22. Alho, O.P., Koivu, M., Sorri, M, Oja ,H. and Kilkku, O. (1994). Which children are being operated on for recurrent acute otitis media? Archives of Otolaryngology - Head & Neck Surgery, 120, 807-811.
23. Isohanni, M., Oja, H., Moilanen, I., and Koiranen, M (1994). Teenage alcohol drinking and nonstandard family background. Social Science & Medicine, 38 , 1565-1574.
24. Sipilä ,P., Hartikainen, A.-L., von Wendt, L. and Oja, H. (1994). Changes in risk factors for unfavourable pregnancy outcome among singletons during twenty years. Acta Obstet Gynecol Scand, 73, 612-618.

1995-1999

25. Isohanni, M., Oja, H., Moilanen, I. and Koiranen, M. (1995). Smoking or quitting during pregnancy: Associations with background and future social and health factors. Scandinavian Journal of Social Medicine , 23, 32-38.
26. Möttönen, J., Oja, H., Krause, U. and Rantakallio, P. (1995). Application of random coefficient regression model to myopia data. Biometrical Journal, 37, 657-672.
27. Alho, O.P., Oja, H., Koivu, M. and Sorri, M. (1995). Chronic otitis media with effusion in infancy - How frequent is it and how does it develop? Archives of Otolaryngology- Head & Neck Surgery, 121, 432-436.
28. Niinimaa, A. and Oja, H. (1995). On the influence function of certain bivariate medians. Journal of the Royal Statistical Society B , 57, 565-574.
29. Alho, O.P. , Oja, H., Koivu, M. and Sorri, M. (1995). Risk factors for chronic otitis media with effusion in infancy - each acute episode involves a high but transient risk. Archives of Otolaryngology - Head & Neck Surgery, 121, 839-843.
30. Möttönen, J. and Oja, H. (1995). Multivariate spatial sign and rank methods. Journal of Nonparametric Statistics, 5, 201-213.
31. Alho, O.P., Jokinen, K., Pirilä, T., Ilo, A. and Oja, H. (1995). Acute epiglottitis and infant conjugate Haemophilus influenzae type b vaccination in Northern Finland. Archives of Otolaryngology - Head & Neck Surgery, 121, 898-902.
32. Alho, O.P. , Oja, H. and Läärä, E. (1996). How should risk estimates for otitis media be perceived? Journal of Clinical Epidemiology, 49, 9-14.
33. Oja, H., Alho, O.P. and Läärä, E. (1996) Model-based estimation of the excess fraction (attributable fraction): Day care and acute middle ear infection. Statistics in Medicine, 15, 1519-1534.
34. Alho, O.P., Läärä, E. and Oja, H. (1996). Public health impact of various risk variables for acute otitis media in Northern Finland. American Journal of Epidemiology, 143, 1149-1156.
35. Sorri, M., Alho, O.P. and Oja, H. (1996). Dynamic multivariate modelling. Day care and consultation rate for acute otitis media. Acta Otolaryngol., 116, 299-301.
36. Luukkonen, S., Koivunen, V. and Oja, H. (1966). Multivariate median filter for correlated noise. IEEE NORSIG'96, pp. 411-414.
37. Alho, O.P., Läärä, E. and Oja, H. (1996) What is the natural history of recurrent acute otitis media in infancy? The Journal of Family Practice, 43,258-264.
38. Kiuttu, J., Larivaara, P., Väisänen, E., Keinänen-Kiukaanniemi, S. and Oja, H. (1996). The effects of family systems medicine training on the practice orientations of general practitioners. Families, Systems & Health, 14, 453-464..
39. Sorri, M., Mäki-Torkko, E., Järvelin, M. and Oja, H. (1997) Prevalence figures for mild hearing impairments cannot be based on clinical data. Acta Otolaryngolol., 117, 179-181.
40. Wahlberg, K.-E., Wynne, L.C., Oja, H., Keskitalo, P. , Pykäläinen, M.A., Lahti, I., Moring, J. , Naarala, M., Sorri, A., Seitamaa, M., L„ksy, K., Kolassa, J., and Tienari, P. (1997) Gene-Environment Interaction in Vulnerability to Schizophrenia: Findings From the Finnish Adoptive Family Study of Schizophrenia. The American Journal of Psychiatry, 154, 355-362..
41. Mäkikyrö, T., Isohanni, M., Moring, J., Oja, H., Jones, P., and Rantakallio, P. (1997) Could the child's risk of schizophrenia be increased in some social class families? Schizophrenia Research, 23, 245-252.
42. Möttönen , J. Oja, H. and Tienari, J. (1997). On the efficiency of multivariate spatial methods. Annals of Statistics, 25, 542-552.
43. Pirilä, T. , Talvisara, A., Alho, O.-P., and Oja, H. (1997). Physiological fluctuations in nasal resistance may interfere with nasal monitoring in nasal provocation test. Acta Otolaryngol., 117, 596-600.
44. Hettmansperger, T. P. , Möttönen, J. and Oja, H. (1997). Multivariate affine invariant one-sample signed-rank tests. Journal of the American Statistical Society, 92, 1591-1600.
45. Brown, B.M., Hettmansperger, T.P., Möttönen, J. and Oja, H. (1997). Rank plots in the affine invariant case. L1-Statistical Analysis and Related Methods. Ed. by Y. Dodge, 351-362.
46. Kiuttu, J., Väisänen, E., Larivaara, P., Keinänen-Kiukaanniemi, S. and Oja, H. (1997) Family systems medicine training: Helping to meet psychiatric and psychosomatic problems. Nord. J. Psychiatry, 51, 259-265.
47. Chakraborty, B. , Chaudhuri, P. and Oja, H. (1998). Operating transformation retransformation on spatial median and angle test. Statistica Sinica, 8, 767-784..
48. Hettmansperger, T. P. , Möttönen, J. and Oja, H. (1998). Multivariate affine invariant rank tests for several samples. Statistica Sinica, 8,785-800.
49. Möttönen, J., Hettmansperger, T.P., Oja, H. and Tienari, J. (1998). On the efficiency of the affine invariant multivariate rank tests. J. Multiv. An., 66, 118-132.
50. Mäki-Torkko, E., Järvelin, M-R., Sorri, M., Muhli, A. and Oja, H. (1998). Aetiology and risk indicators of hearing impairments in a one-year birth cohort from 1985-86 in Northern Finland. Scandinavian Audiology.
51. Koivunen, V., Luukkonen, S. and Oja, H. (1998) Affine Equivariance in Multichannel OS-filtering. IEEE ICASSP'98, V, 2881-2884.
52. Hettmansperger, T. P. , Möttönen, J. and Oja, H. (1999). The geometry of the affine invariant multivariate sign and rank methods. J. Nonp. Analysis, 11,271-285.
53. Niinimaa, A. and Oja, H. (1999). Multivariate median. In: Encyclopedia of Statistical Sciences (Update Volume 3). Eds. by Kotz, S., Johnson, N.L. and Read, C.P. , Wiley.
54. Oja, H. (1999). Affine invariant multivariate sign and rank tests and corresponding estimates: A review. Scand. J. Statist. (invited paper), 26, 319-343.
55. Hettmansperger, T.P., Oja, H. and Visuri, S. (1999). Discussion of 'Multivariate Analysis by Data Depth: Descriptive Statistics, Graphics and Inference' by Liu, Parelius and Singh. Annals of Statistics, 3, 845-853.
56. Visuri, S., Oja, H. and Koivunen, V. (1999) Multichannel signal processing using spatial rank covariance matrixces. In: Proceedeings of the IEEE-EURASIP Workshop on Nonlinear Signal and Image Processing (NSIP'99), 75-79
57. Visuri, S., Koivunen, V., Möttönen, J. and Oja, H. (1999). Matrix perturbations in covariance and autocovariance matrix estimators. In: Proceedings of the 1999 Finnish Signal Processing Symposium (FINSIG'99), 142-146.
58. Möttönen, J., Oja, H., Koivunen, V., (1999) Robust autocovariance estimation based on sign and rank correlation coefficients. IEEE HOS'99, pp. 187-190.

2000-2004

59. Visuri, S., Oja, H. and Koivunen, V. (2000) Robust subspace DOA estimation for wireless communications. The IEEE Annual Vehicular Technology Conference VTC2000, Tokyo, Japan, 2551-2555to.
60. Wahlberg, K.-E., Wynne, L., Oja, H., Keskitalo, P., Anias-Tanner, H., Koistinen, P., Tarvainen, T., Lahti, I., Moring, J., Naarala, M., Sorri, A., and Tienari, P. (2000). Thought Disorder Index of Finnish adoptees and communication deviance of their adoptive parents. Psychological Medicine, 30, 127-136.
61. Visuri, S., Koivunen, V. and Oja, H. (2000). Sign and rank covariance matrices. J. Statistical Planning and Inference, 91, 557-575.
62. Visuri S., Oja, H., Koivunen, V. (2000). Nonparametric Statistics for DoA Estimation in the Presence of Multipath. To In Proceedings of the First IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2000), Boston, USA, pages 356-360, 2000.
63. Visuri, S., Oja, H., Koivunen, V., (2000) Nonparametric method for subspace based frequency estimation, EUSIPCO-2000 , Tampere, Finland, 1261-1264.
64. Sandberg, S., Paton, J.Y., Ahola, S., Hillary, C. McCann, D., McGuinness, D. and Oja, H. (2000). Role of Stressful Life Events in Provoking Asthma Attacks in Children. Lancet , 356: 982-987.
65. Isohanni, M., Jones, P., Moilanen, K., Rantakallio, P., Veijola, J., Oja, H., Koiranen, M., Jokelainen, J., Croudace, T., Järvelin, M.-J. (2001). Early development milestones in adult schizophrenia and other psychoses. A 31-year follow-up of the Northern Finland 1966 Birth Cohort. Schizophrenia Research, 52, 1-19.
66. Visuri, H. Oja and V. Koivunen (2001). Blind channel identification using robust subspace estimation. In Proceedings of the 11th IEEE Workshop on Statistical Signal Processing, Singapore, 2001.
67. S. Visuri, H. Oja and V. Koivunen (2001). Subspace-based direction of arrival estimation using nonparametric statistics. IEEE Transactions on Signal Processing, 49, 2060-2073.
68. Sandberg, S., McCann, D.C., Ahola, S., Oja, H., Paton, J.Y. and McGuinness, D. (2002). Positive experiences and their relationship between stress and asthma in children. Acta Paediatrica, 91(2) 02; 152-.
69. Ronkainen, T., Oja, H. and Orponen, P. (2002). Computation of the multivariate Oja median. In: R.Dutter, P. Filzmoser, U. Gather and P.J. Rousseeuw: Developments in Robust Statistics , p. 344-359 Springer, Heidelberg.
70. Taskinen, S., Kankainen, A., and Oja, H. (2002). Tests of independence based on sign and rank covariances. In: R.Dutter, P. Filzmoser, U. Gather and P.J. Rousseeuw: Developments in Robust Statistics, p. 387-403. Springer, Heidelberg.
71. Ollila, E., Hettmansperger, T.P., and Oja, H. (2002), Estimates of regression coefficients based on sign covariance matrix , J.Royal Statist.Soc.,B 64, 447-466 .
72. Croux,C., Ollila, E., and Oja, H. (2002). Sign and rank covariance matrices: Statistical properties and application to principal component analysis. In Statistical Data Analysis Based on the L1-Norm and Related Methods, p. 257-270. Ed. by Yadolah Dodge, Birkhäuser, Basel.
73. Möttönen, J., Hüsler, J. and Oja, H. (2003). Multivariate nonparametric tests in randomized complete block design. J. Multivariate Analysis,, 85, 106-129.
74. Visuri, S., Ollila, E., Koivunen, V., Möttönen, J., and Oja, H. (2003) Affine equivariant multivariate rank methods. (Invited paper.) J. Statist. Planning and Inference , 114, 161-185.
75. Taskinen,S., Kankainen, A. and Oja,H. (2003). Sign test of independence between two random vectors. Statistics and Probability Letters, , 62, 9-21.
76. Ollila, E., Oja, H., and Koivunen, V., (2003). Estimates of regression coefficients based on rank covariance matrix , J. Am. Statist. Assoc., 98, 90-98.
77. Koshevoy, G., Möttönen, J. and Oja,H. (2003). Scatter matrix estimate based on the zonotope. Annals of Statistics,, 31, 1439-1459.
78. Ollila, E., Oja, H. and Croux, C. (2003). The affine equivariant sign covariance matrix: Asymptotic behavior and efficiencies . J. Multivariate Analysis,, 87, 328-355.
79. Nadar, M., Hettmansperger, T.P., and Oja H., (2003). The asymptotic variance of the Oja median. Stat. Probab. Letters., 64, 431-442.
80. Topchii, A., Tyurin, Yu. and Oja, H. (2003). Inference based on the affine invariant multivariate Mann-Whitney-Wilcoxon statistic. J. Nonparam. Statist., 14, 403-414
81. Taskinen, S., Kankainen, A. and Oja, H. (2003). Rank scores tests of multivariate independence. Theory and Applications of recent Robust Methods, eds. by M. Hubert, G. Pison, A. Stryuf and S. Van Aelst, Birkhauser, Basel. In print.
82. Kankainen, A., Oja, H. and Taskinen, S. (2003). On Mardia's tests of multinormality. Theory and Applications of recent Robust Methods, eds. by M. Hubert, G. Pison, A. Stryuf and S. Van Aelst, Birkhauser, Basel. In print.
83. Oja, H. (2003). Multivariate M-estimates of location and shape. In Statistics, Econometrics and Society. Essays in honor of Leif Nordberg , eds. Rune Höglund, Markus Jäntti and Gunnar Rosenqvist.
84. Ollila, E., Croux, C. and Oja, H. (2004). Influence function and asymptotic effiency of the affine equivariant rank covariance matrix. Statistica Sinica , 14, 297-316.
85. Koshevoy, G., Möttönen, J. and Oja, H. (2004). On the geometry of multivariate L1 objective functions. Allgemeines Statistisches Archiv, 88, 137-154.
86. Oja, H. and Randles, R. (2004). Multivariate nonparametric tests. Statistical Science 19, 598–605

2005-2009

87. Möttönen, J., Oja, H. and Serfling, R. (2005). Multivariate generalized spatial signed-rank methods. Journal of Statistical Research , 39, 19-42.
88. Oja, H. (2005). Discussion of the paper "Breakdown and groups" by Laurie Davies and Ursula Gather. Annals of Statistics , 33, 1000-1004.
89. Oja, H. and Paindaveine, D. (2005). Optimal signed-rank tests based on hyperplanes. J. Statist. Planning and Inference , 135, 300-323
90. Taskinen, S., Oja, H. and Randles, R. (2005). Multivariate nonparametric tests of independence. J. Amer. Stat. Assoc. 100, 916-925,
91. Taskinen, S., Croux, C., Kankainen, A., Ollila, E. and Oja, H. (2006). Influence functions and efficiencies of the canonical correlation and vector estimates based on scatter and shape matrices. J. Multiv. Analysis, 97, 359-384.
92. Oja, H., Sirkiä, S. and Eriksson, J. (2006). Scatter matrices and independent component analysis, Austrian Journal of Statistics, 35, 175-189.
93. Nevalainen, J. and Oja, H. (2006). SAS/IML Macros for a Multivariate Analysis of Variance Based on Spatial Signs. Journal of Statistical Software 16, Issue 5.
94. Nordhausen, K., Oja, H., and Tyler, D. (2006). On the efficiency of invariant multivariate sign and rank tests. Festschrift for Tarmo Pukkila on his 60th Birthday. Eds. by Liski, E., Isotalo, J., Niemelä, J., Puntanen, S. and Styan G.
95. Saastamoinen, A., Oja, H., Huupponen, E., Värri, Hasan, J. and Himanen, S-L. (2006) Topographic differences in mean computational sleep depth between healthy controls and obstructive sleep apnoea patients. Journal of Neuroscience Methods, 157, 178-184.
96. Hartikainen, A. and Oja, H. (2006). On nonparametric discrimination rules. In Data Depth: Robust Multivariate Analysis, Computational Geometry, and Applications, ed. by Reginia Liu, AMS DIMACS Book Series, 61-70.
97. Busarova D., Tyurin Y., Möttönen J. and Oja H. (2006) Multivariate Theil estimator with the corresponding test. Mathematical Methods of Statistics, 15, No 1, pp. 1 - 19.
98. Hallin, M. Oja, H., and Paindaveine, D. (2006) Semiparametrically efficient rank-based inference for shape. II. Optimal R-estimation of shape. Annals of Statistics, 34, 2757-2789.
99. Taskinen, S., Sirkiä, S. and Oja, H. (2006). Independent component analysis based on symmetrised scatter matrices, Computational Statistics & Data Analysis, 51, 5103-5111.
100. Nevalainen, J, Larocque, D. and Oja, H. (2007). A weighted spatial median for clustered data. Statistical Methods & Applications, 15, 355-379.
101. Oja, H. and Critchley, F. (2007). Discussion of the paper "A survey on robust statistics" by S. Morgenthaler. Statistical Methods & Applications, 15, 271-293.
102. Nordhausen, K., Oja, H. and Ollila, E. (2007): Robust ICA Based on Two Scatter Matrices. In Aivazian, S. , Filzmoser, P. and Kharin, Y. (editors) "Proceedings of the 8th International Conference on Computer Data Analysis and Modeling", 84-91, Minsk Publishing Center BSU, Minsk.
103. Kankainen, A., Taskinen, S. and Oja, H. (2007). Tests of multinormality based on location vectors and scatter matrices. Statistical Methods & Applications, 16, 357-379.
104. Larocque, D., Nevalainen, J. and Oja, H. (2007). A Weighted Multivariate Sign Test for Cluster Correlated Data. Biometrika, 94, 267-283.
105. Nevalainen, J., Larocque, D. and Oja, H. (2007). On the multivariate spatial median for clustered data. The Canadian Journal of Statistics, 35, 215-231.
106. Sirkiä, S., Taskinen, S., and Oja, H. (2007), Symmetrised M-estimators of scatter. J. Multivariate Analysis,98, 1611-1629.
107. Nevalainen, J., Möttönen, J. and Oja, H. (2007). A spatial rank test and corresponding rank test for several samples. Statistics & Probability Letters, 78, 661-668.
108. Larocque, D., Nevalainen, J. and Oja, H. (2007). One-Sample Location Tests for Multilevel Data. Journal of Statistical Planning and Inference,8, 2469-2482.
109. Nordhausen, K., Oja, H. and Ollila, E. (2008). Robust Independent Component Analysis Based on Two Scatter Matrices. Austrian Journal of Statistics, 37(1), 91-100.
110. Chaudhuri,P., Ghosh,A. and Oja, H. (2008). Classification Based on Hybridization of Parametric and Nonparametric Classifiers, IEEE Transactions on Pattern Analysis and Machine Intelligence, 03.
111. Lindroos,B., Maenpaa, K., Ylikomi, T., Oja, H., Suuronen,R. and Miettinen, S. (2008). Characterisation of human dental stem cells and buccal mucosa fibroblasts Biochemical and Biophysical Research Communications, 368, 2, 329-335
112. Uusitalo L, Nevalainen J, Niinistö S, Alfthan G, Sundvall J, Korhonen T, Kenward MG, Oja H, Veijola R, Simell O, Ilonen J, Knip M, Virtanen SM (2008). Serum a- and -tocopherol concentrations and risk of advanced beta cell autoimmunity in children with HLA-conferred susceptibility to type 1 diabetes mellitus Diabetologia, 51, 773-780
113. Rantanen,H., Koivisto,A-M., Salokangas, R., Helminen, M., Oja, H., Pirkola, S., Wahlbeck, K. and Joukamaa, M. (2008). Five-year mortality of Finnish schizophrenia patients in the era of deinstitutionalization. Soc Psychiatry Psychiatr Epidemiol.
114. Ollila, E., Oja, H. and Koivunen, V. (2008). Complex-valued ICA based on a pair of generalized covariance matrices Computational Statistics & Data Analysis, 52, 3789-3805
115. Nordhausen, K., Oja, H. and Tyler, D.E.(2008). Tools for Exploring Multivariate Data: The Package ICS. Journal of Statistical Software, Journal of Statistical Software, 28(6), 1-31.
116. Nordhausen, K., Oja, H. and Paindaveine, D.(2009). Signed-Rank Tests for Location in the Symmetric Independent Component Model. Journal of Multivariate Analysis, 100(5), 821-834.
117. Haataja, R., Larocque, D., Nevalainen, J. and Oja, H. (2009). A weighted multivariate signed-rank test for cluster-correlated data Journal of Multivariate Analysis, 100, 1107-1119
118. Sirkiä, S., Taskinen, S., Oja, H. and Tyler, D. (2009) Tests and estimates of shape based on spatial signs and ranks. Journal of Nonparametric Statistics, 21, 155--176.
119. Tyler, D., Critchley, F., Dumbgen, L., and Oja, H. and Tyler, D. (2009) Invariant coordinate selection. Journal of Royal Statistical Society B, {71}, 549--592.
120. Tahvanainen, A., Leskinen, M., Koskela, J., Ilveskoski, E., Nordhausen, K., Oja, H., Kähönen, M., Kööbi, T., Mustonen, J., Pörsti, I. (2009). Ageing and cardiovascular responses to head-up tilt in healthy subjects. Atherosclerosis, 207, 445-451.

2010-

121. Oja, H. (2010). Multivariate Nonparametric Methods with R. An Approach Based on Spatial Signs and Ranks. Springer, New York.
122. Larocque, D., Haataja, R., Nevalainen, R. and Oja, H. (2010). Two Sample Tests for the Nonparametric Behrens-Fisher Problem with Clustered Data. Journal of Nonparametric Statistics, 22, 755 - 771 .
123. Laaksonen, M., Härkänen, T., Knekt, P., Virtala, E., and Oja, H. (2010). Estimation of Population attributable risk (PAR) for disease occurence in a cohort study design. Statistics in Medicine, 29, 860–874
124. Laaksonen, M., Knekt, P., Härkänen, T., Virtala, E., and Oja, H. (2010).Estimation of the population attributable fraction for mortality in a cohort study using a piecewise constant hazards model. American Journal of Epidemiology, 171, 837-47.
125. Salokangas, R., Helminen, M., Koivisto, A.-M., Rantanen, H., Oja, H., Pirkola, S., Wahlbeck, K., and Joukamaa, M. (2010). Incidence of hopsitalised schizophrenia in Finlnad since 1980; decreasing and incresing again. Social Psychiatry and Psychiatric Epidemiology, DOI 10.1007/s00127-010-0209-z
126. Rauhala,H., Jalava, S.E., Isotalo,J., Bracken, H., Lehmusvaara, S., Tammela, T.L.J., Oja,H., and Visakorpi, T. (2010). miR-193b is an epigenetically regulated putative tumor suppressor in prostate cancer International Journal of Cancer, 127, 1363-72..
127. Nevalainen, J., Larocque, D., Oja, H., and Pörsti, I. (2010). Nonparametirc analysis of clustered multivariate data. Journal of the American Statistical Association, 105, 864-872.
128. Ilmonen, P., Nevalainen, J. and Oja, H. (2010). Characteristics of multivariate distributions and the invariant coordinate system. Statistics & Probability Letters, 80, 1844-1853
129. Taskinen, S., Sirkiä, S, and Oja, H. (2010). k-Step shape estimators based on spatial signs and ranks. Journal of Statistical Planning and Inference, Volume 140, 3376-3388.
130. Möttönen, J., Nordhausen, K., and Oja, H. (2010). Asymptotic theory of the spatial median. In: Festschrift in Honor of Professor Jana Jureckova, pp. 182–193, IMS Collections, Vol. 7.
131. Ilmonen, P., Nordhausen, K., Oja, H. and Ollila, E. (2010). A New Performance Index for ICA: Properties, Computation and Asymptotic Analysis. In Vigneron, V., Zarzoso, V., Moreau, E., Gribonval, R. and Vincent, E. (editors) "Latent Variable Analysis and Signal Separation", 229-236, Springer, Heidelberg.
132. Nordhausen, K. and Oja, H. (2010). Three Scatter Matrices and Independent Subspace Analysis. In Aivazian, S. , Filzmoser, P. and Kharin, Y. (editors) "Proceedings of the 9th International Conference on Computer Data Analysis and Modeling", 93-100, Minsk Publishing Center BSU, Minsk.
133. Nordhausen, K., Oja, H. and Ollila, E. (2011). Multivariate Models and the First Four Moments. In Hunter, D.R., Richards, D.S.R. and Rosenberger, J.L. (editors) "Nonparametric Statistics and Mixture Models: A Festschrift in Honor of Thomas P. Hettmansperger", 267-287, World Scientific, Singapore.
134. Nordhausen, K. and Oja, H. (2011). Multivariate L1 methods: The package MNM. Journal of Statistical Software, 43(5), 1-28.
135. Laaksonen, M., Virtala, E., Knekt, P., Oja, H., Härkänen, T. (2011). SAS macros for calculation of Population Attributable Fraction (PAF) in a cohort study design. Journal of Statistical Software, 43(7).
136. Kiwuwa-Muyingo, S., Oja, H., Walker, A. S., Levin, J., and Todd, J. (2011) Clustering based on adherence data. Epidemiologic Perspectives & Innovations 2011, 8:3
137. Mattila, H., Schindler, M., Isotalo, J., Ikonen, T., Vihinen, M., Oja, H. (2011), Tammela, T., Wahlfors, T., and Schleutker, J. NMD and microRNA expression profiling of the HPCX1 locus reveal MAGEC1 as a candidate prostate cancer predisposition gene. BMC Cancer 2011, 11:327
138. Tokola, K., Larocque, D., Nevalainen, J., and Oja, H. (2011). Power, sample size, and cost of sampling for clustered data. Statistics and Probability Letters, 81, 7, 852-860.
139. Nordhausen, K. and Oja, H. (2011): Independent Subspace Analysis using Three Scatter Matrices. Austrian Journal of Statistics, 40 (1&2), 93-101. link
140. Nordhausen, K., Ollila, E. and Oja, H. (2011): On the Performance Indices of ICA and Blind Source Separation. In the Proceedings of "2011 IEEE 12th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC 2011)", 486-490.
141. Nordhausen, K. and Oja, H. (2011): Scatter Matrices with Independent Block Property and ISA. In the Proceedings of "19th European Signal Processing Conference 2011 (EUSIPCO 2011)", 1738-1742.
142. Nordhausen, K., Ilmonen, P., Mandal, A., Oja, H. and Ollila, E. (2011): Deflation-based FastICA Reloaded. In the Proceedings of "19th European Signal Processing Conference 2011 (EUSIPCO 2011)", 1854-1858.
143. Oja, H. and Nordhausen, K. (2011): Independent component analysis. To appear in 2nd edition of Encyclopedia of Environmetrics.
144. Oja, H. (2011): Descriptive statistics for nonparamateric models. The impact of some Ercih Lehmann's papers. To appear in Selected Works of E.L. Lehmann (ed. J. Rojo), Springer, New York.
145. Ilmonen, P., Oja, H. and Serfling, R. (2011) On Invariant Coordinate System (ICS) Functionals. Conditionally accepted (International Statistical Review).
146. Datta, S., Nevalainen, J., and Oja, H. (2011) A general class of signed rank tests for clustered data when the cluster size is potentially informative. Conditionally accepted (Journal of Nonparametric Statistics).
147. Taskinen, S., Koch, I. and Oja, H. (2011). Robustifying principal components with spatial sign vectors: an application to regression, conditionally accepted (Statistics and Probability Letters).
148. Lemponen, R., Larocque, D., Nevalainen, J., and Oja, H. (2011). Weighted rank tets and Hodges-Lehmann estimates for the multivariate two-sample location problem with clustered data. Submitted.
149. Mattila, H., Ikonen, T., Vihinen, M., Isotalo, J., Oja, H., Tammela, T.L.J., Wahlfors, T., and Schleutker, J. (2011). Nonsense-mediated mRNA deacy and microRNA array analysis of Finnish HPCX-linked families. Submitted.
150. Liski, E., Nordhausen, K. and Oja, H. (2011): Supervised Invariant Coordinate Selection. Submitted.
151. Oja, H., Paindaveine, D., and Taskinen, S. (2011). Parametric and nonparametric tests for multivariate independence in IC models. Submitted.
152. Ilmonen, P., Nordhausen, K., Oja, H. and Ollila, E. (2011) : Independent Component (IC) Functionals and a New Performance Index. Submitted.
153. Nevalainen, J., Oja, H. and Datta, S. (2011) An overview of informative cluster size problems. Submitted.
154 Taskinen, S. and Oja, H. (2011). Influence functions and efficiencies of k-step Hettmansperger-Randles estimators, Manuscript.
155. Tokola, K., Kurkilahti, M., Lundell, A., Nevalainen, J., and Oja, H. (2011). Data design and cost optimization for hierarchical data. Manuscript.
156. Kiwuwa-Muyingo, S., Walker, A.S., Oja, H., Levin, J. and Todd, J (2011). The impact of first year adherence to ART on long term clinical and immunological outcomes in the DART trial in Uganda and Zimbabwe. Manuscript.
157. Kiwuwa-Muyingo, S., Oja, H., Walker, A.S., Ilmonen, P., Levin, J. and Todd, J (2011). Dynamic logistic regression model for modelling the association between adherence and mortality: an antiretroviral therapy (ART) study for HIV-infected adults. Manuscript.