J. Pajarinen, and J. Peltonen. Machine Learning and Knowledge Discovery in Databases, volume 8188 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2013)
D. Szer, and F. Charpillet. Machine Learning: European Conference on Machine Learning, volume 3720 of Lecture Notes in Computer Science, chapter 38, Springer Berlin Heidelberg, (2005)