I. Tsyfra; Modelling Social Game Systems by Rule Complexes1st International Conference on Rough Sets and Current Trends in Computing, Warsaw, Poland, Jun 22-26, 1998; PTM, Wydz. MIM UW, II PW (org.)
I. Tsyfra; Trust in RDF Graphs16th East-European Conference on Advances in Databases and Information Systems, Poznań, Poland, Sep 17-20, 2012; Poznan University of Technology, Institute of Computing Science, Poland (org.)
B. Kwaśniewski; Satisfiability of formulas as object classification16th International Workshop on Concurrency, Specification and Programming, Łagów, Poland, Sep 27-29, 2007; Humboldt University, Warsaw University (org.)
A. Tereszkiewicz; A note on generalized rough approximation10th International Workshop on Concurrency, Specification and Programming, Warsaw, Poland, Oct 3-5, 2001; Humboldt University, Warsaw University (org.)
A. Antonevich; 12th International Workshop on Concurrency, Specification and Programming, Czarna, Poland, Sep 25-27, 2003; Humboldt University, Warsaw University (org.)
J. Makowska; 13th International Workshop on Concurrency, Specification and Programming, Caputh, Germany, Sep 24-26, 2004; Humboldt University, Warsaw University (org.)
B. Kwaśniewski; A logic-algebraic approach to graded inclusion19th International Workshop on Concurrency, Specification and Computing, Helenenau bei Berlin, Germany, Sep 27-29, 2010; Humboldt University, Warsaw University (org.)
M. Hryniewicka, A. Stocka; Approximation Spaces Based on Similarity and Dissimilarity15th International Workshop on Concurrency, Specification and Programming, Wandlitz, Germany, Sep 27-29, 2006; Humboldt University, Warsaw University (org.)
; Developing automated formal framework for rough set theory14th International Workshop on Concurrency, Specification and Programming, Ruciane-Nida, Poland, Sep 28-30, 2005; Humboldt University, Warsaw University (org.)
; Possible rough ingredients of concepts14th International Workshop on Concurrency, Specification and Programming, Ruciane-Nida, Poland, Sep 28-30, 2005; Humboldt University, Warsaw University (org.)
