Mikhail Ju. Moshkov Andrzej Skowron Zbigniew Suraj Extracting Relevant Information about Reduct Sets from Data Tables. 200-211 2008 9 T. Rough Sets http://dx.doi.org/10.1007/978-3-540-89876-4_12 journals/trs/2008-9 db/journals/trs/trs9.html#MoshkovSS08