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@article{IVM_1963_2_a17, author = {B. M. Shain}, title = {On the theory of the restrictive semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {152--154}, publisher = {mathdoc}, number = {2}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1963_2_a17/} }
B. M. Shain. On the theory of the restrictive semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1963), pp. 152-154. http://geodesic.mathdoc.fr/item/IVM_1963_2_a17/