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@article{IVM_1992_8_a2, author = {M. V. Volkov}, title = {Semigroup varieties with a~modular subvariety {lattice.~III}}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {21--29}, publisher = {mathdoc}, number = {8}, year = {1992}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1992_8_a2/} }
M. V. Volkov. Semigroup varieties with a~modular subvariety lattice.~III. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 8 (1992), pp. 21-29. http://geodesic.mathdoc.fr/item/IVM_1992_8_a2/