por Benson, D. J, 1955- [autor] | Cohen, Frederick Ronald, 1945-1509 [autor] | American Mathematical Society.
por Callegaro, Filippo [editor] | Cohen, Frederick [editor] | De Concini, Corrado [editor] | Feichtner, Eva Maria [editor] | Gaiffi, Giovanni [editor] | Salvetti, Mario [editor].