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@article{IVM_2004_2_a9, author = {L. M. Martynov}, title = {Reduced varieties of semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {76--79}, publisher = {mathdoc}, number = {2}, year = {2004}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_2004_2_a9/} }
L. M. Martynov. Reduced varieties of semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 2 (2004), pp. 76-79. http://geodesic.mathdoc.fr/item/IVM_2004_2_a9/