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; 20th International Workshop on Concurrency, Specification and Programming, Pułtusk, Poland, Sep 28-30, 2011; Humboldt University, Warsaw University, Białystok University of Technology (org.)
; On Graded Nearness of Sets20th International Workshop on Concurrency, Specification and Programming, Pułtusk, Poland, Sep 28-30, 2011; Humboldt University, Warsaw University, Białystok University of Technology (org.)
A. Dobrogowska; Elements of Representation Theory for Pawlak Information Systems21st International Workshop on Concurrency, Specification and Programming, Berlin, Germany, Sep 26-28, 2012; Humboldt University, Warsaw University (org.)
A. Dobrogowska; Computer - driven searching for axiomatization of rough sets21st International Workshop on Concurrency, Specification and Programming, Berlin, Germany, Sep 26-28, 2012; Humboldt University, Warsaw University (org.)
A. Lebedev; Multi-sorted preferences and belief changeLogic Databases and the Meaning of Change, Dagstuhl, Germany, Sep 23-27, 1996; Schloss Dagstuhl, Leibniz-Zentrum fuer Informatik (org.)
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A. Szczypińska; Noncommutative Kahler-like structures in quatizationSummer School on Poisson Geometry, Triest, Italy, Jul 4-22, 2005; International Centre for Theoretical Physics (org.)
A. Szczypińska; Infinite dimensional Poisson geometry and coherent statesSummer School on Poisson Geometry, Triest, Italy, Jul 4-22, 2005; International Centre for Theoretical Physics (org.)
A. Szczypińska; Summer School on Poisson Geometry, Triest, Italy, Jul 4-22, 2005; International Centre for Theoretical Physics (org.)
