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@article{IVM_1989_6_a3, author = {M. V. Volkov}, title = {Semigroup varieties with a~modular lattice of subvarieties}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {51--60}, publisher = {mathdoc}, number = {6}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1989_6_a3/} }
M. V. Volkov. Semigroup varieties with a~modular lattice of subvarieties. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1989), pp. 51-60. http://geodesic.mathdoc.fr/item/IVM_1989_6_a3/