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@article{MZM_1989_45_3_a1, author = {M. V. Volkov}, title = {The finite basis question for varieties of semigroups}, journal = {Matemati\v{c}eskie zametki}, pages = {12--23}, publisher = {mathdoc}, volume = {45}, number = {3}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a1/} }
M. V. Volkov. The finite basis question for varieties of semigroups. Matematičeskie zametki, Tome 45 (1989) no. 3, pp. 12-23. http://geodesic.mathdoc.fr/item/MZM_1989_45_3_a1/