Aijun An Jerzy Stefanowski Sheela Ramanna Cory J. Butz Witold Pedrycz Guoyin Wang Rough Sets, Fuzzy Sets, Data Mining and Granular Computing, 11th International Conference, RSFDGrC 2007, Toronto, Canada, May 14-16, 2007, Proceedings RSFDGrC Lecture Notes in Computer Science 4482 Springer 2007 978-3-540-72529-9 db/conf/rsfdgrc/rsfdgrc2007.html