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@article{IVM_1980_2_a11, author = {M. V. Sapir}, title = {Finite and independent axiomatizability of some quasivarieties of semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {76--78}, publisher = {mathdoc}, number = {2}, year = {1980}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1980_2_a11/} }
M. V. Sapir. Finite and independent axiomatizability of some quasivarieties of semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (1980), pp. 76-78. http://geodesic.mathdoc.fr/item/IVM_1980_2_a11/