1. Optimal Filtering;Anderson,1979
2. Pattern Recognition and Machine Learning;Bishop,2006
3. R. Braatz, (1990). Te Data Download Website. url: http://web.mit.edu/braatzgroup/links.html.
4. Maximum likelihood from incomplete data via the EM algorithm;Dempster;J. Roy. Stat. Soc. Ser. B (Methodol.),1977
5. The mixtures of Students t-distributions as a robust framework for rigid registration;Gerogiannis;Image Vis Comput.,2009