S. Stepin; Skew derivations and their invariantsMidwest Ring Theory Seminar, Madison WI, USA, ; University of Wisconsin (org.)
A. Odzijewicz; European Symposium on Telematics, Hypermedia and Artificial Intelligence, Varese, Italy, Jun 21-22, 1999
A. Dobrogowska, T. Goliński, P. Kielanowski, A. Odzijewicz; IX European Summer School in Logic, Language and Information, Aix-en-Provence, France, Aug 11-22, 1997; Faculté des Lettres, Université de Provence (org.)
A. Odzijewicz; Geometrie und Anwendungen I : 5. Tagung der Fachsektion Geometrie der MGDDR, Zechliner Hutte b/Rheinsberg, DDR, Apr 9-14, 1984; MGDDR (org.)
M. Szajewska; Rule examples for the social game theoryI World Congress of the Game Theory Society, Bilbao, Spain, Jul 24-28, 2000; Game Theory Society, Basque Country University (org.)
M. Hryniewicka; On strong uniform dimension of finite groupsEuroconference Rings, Modules and Representations - Constanta 2000, Constanta, Romania, Aug 14-18, 2000; Ovidius University (org.)
M. Hryniewicka; Central invariants of Lie color algebras acting on group-graded algebrasEuroconference Rings, Modules and Representations - Constanta 2000, Constanta, Romania, Aug 14-18, 2000; Ovidius University (org.)
M. Hryniewicka; The NATO Advanced Study Institute on Algebra - Representation Theory, Constanta, Romania, Aug 2-12, 2000
M. Mączyński; On iterated maximal essential extensions of associative rings7th International Conference on Radicals, Innsbruck, Austria, Jul 31 - Aug 3, 2000
T. Goliński; Radicals of Rings and Related Topics, Warsaw, Poland, Aug 2-8, 2009; Banach Center (org.)
