1. Dempster, A.P., Laird, N.M., Rubin, D.B.: Maximum likelihood from incomplete data via the em algorithm. Journal of the Royal Statistical Society: Series B (Methodological) 39(1), 1–38 (1977)
2. Duda, R.O., Hart, P.E., Stork, D.G.: Pattern Classification, 2nd edn. Wiley, New York (2001)
3. Filipczuk, P., Kowal, M., Marciniak, A.: Feature selection for breast cancer malignancy classification problem. J. Medical Informatics & Technologies 15, 193–199 (2010)
4. Gupta, M.R., Chen, Y.: Theory and use of the em algorithm. Foundations and Trends in Signal Processing 4(3), 224–292 (2010)
5. Hrebień, M., Steć, P., Obuchowicz, A., Nieczkowski, T.: Segmentation of breast cancer fine needle biopsy cytological images. Int. J. Appl. Math. and Comp. Sci. 18(2), 159–170 (2010)