por Fuchs, Jurgen, 1957 may. 19- [editor] | European Congress of Mathematics (4 : 2004 : Karlstad, Suecia).
por AMS Spring Central Section Meeting on "Probabilistic and Asymptotic Aspects of Group Theory" (2004 : Athens, Ohio) | Grigorchuk, Rostislav I [editor] | AMS Fall Southeastern Section Meeting on "Topological Aspects of Group Theory" (2004 : Nashville, Tennessee).