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@article{DAN_1961_140_5_a5, author = {S. R. Kogalovskii}, title = {The multiplicative semigroups of rings}, journal = {Doklady Akademii Nauk}, pages = {1005--1007}, publisher = {mathdoc}, volume = {140}, number = {5}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_5_a5/} }
S. R. Kogalovskii. The multiplicative semigroups of rings. Doklady Akademii Nauk, Tome 140 (1961) no. 5, pp. 1005-1007. http://geodesic.mathdoc.fr/item/DAN_1961_140_5_a5/