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@article{IVM_1979_11_a0, author = {L. M. Gluskin}, title = {Extensions of commutative semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {3--12}, publisher = {mathdoc}, number = {11}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1979_11_a0/} }
L. M. Gluskin. Extensions of commutative semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1979), pp. 3-12. http://geodesic.mathdoc.fr/item/IVM_1979_11_a0/