Andrzej Jankowski Andrzej Skowron Roman W. Swiniarski Perspectives on Uncertainty and Risk in Rough Sets and Interactive Rough-Granular Computing. 69-84 2014 129 Fundam. Informaticae 1-2 https://doi.org/10.3233/FI-2014-961 db/journals/fuin/fuin129.html#JankowskiSS14