Hiroshi Sakai Mihir K. Chakraborty Aboul Ella Hassanien Dominik Slezak William Zhu Rough Sets, Fuzzy Sets, Data Mining and Granular Computing, 12th International Conference, RSFDGrC 2009, Delhi, India, December 15-18, 2009. Proceedings 5908 2009 http://dx.doi.org/10.1007/978-3-642-10646-0 978-3-642-10645-3 RSFDGrC Lecture Notes in Computer Science Springer db/conf/rsfdgrc/rsfdgrc2009.html