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@article{IVM_1985_11_a6, author = {A. N. Petrov}, title = {Injective ranks of varieties of semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {82--84}, publisher = {mathdoc}, number = {11}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1985_11_a6/} }
A. N. Petrov. Injective ranks of varieties of semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1985), pp. 82-84. http://geodesic.mathdoc.fr/item/IVM_1985_11_a6/