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@article{DAN_1960_134_5_a8, author = {B. M. Shain}, title = {A system of axioms for semigroups comprisable by generalized groups}, journal = {Doklady Akademii Nauk}, pages = {1030--1033}, publisher = {mathdoc}, volume = {134}, number = {5}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_134_5_a8/} }
B. M. Shain. A system of axioms for semigroups comprisable by generalized groups. Doklady Akademii Nauk, Tome 134 (1960) no. 5, pp. 1030-1033. http://geodesic.mathdoc.fr/item/DAN_1960_134_5_a8/