Piotr Blajdo Jerzy W. Grzymala-Busse Zdzislaw S. Hippe Maksymilian Knap Teresa Mroczek Lukasz Piatek A Comparison of Six Approaches to Discretization-A Rough Set Perspective. 31-38 2008 RSKT http://dx.doi.org/10.1007/978-3-540-79721-0_10 conf/rskt/2008 db/conf/rskt/rskt2008.html#BlajdoGHKMP08