V. Wiktor Marek, Miroslaw Truszczynski. Rough Sets - What Are They About?. In Lech Polkowski, Andrzej Skowron, editors, Rough Sets and Current Trends in Computing, First International Conference, RSCTC 98, Warsaw, Poland, June 22-26, 1998, Proceedings. Volume 1424 of Lecture Notes in Computer Science, pages 24, Springer, 1998. [doi]
Abstract is missing.