Lech Polkowski Yiyu Yao Piotr Artiemjew Davide Ciucci Dun Liu Dominik Slezak Beata Zielosko Rough Sets - International Joint Conference, IJCRS 2017, Olsztyn, Poland, July 3-7, 2017, Proceedings, Part II IJCRS (2) Springer 2017 Lecture Notes in Computer Science 10314 978-3-319-60839-6 978-3-319-60840-2 https://doi.org/10.1007/978-3-319-60840-2 db/conf/rskt/ijcsr2017-2.html