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@article{IVM_1982_11_a7, author = {V. B. Repnitskii}, title = {Varieties of $l$-semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {54--58}, publisher = {mathdoc}, number = {11}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1982_11_a7/} }
V. B. Repnitskii. Varieties of $l$-semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1982), pp. 54-58. http://geodesic.mathdoc.fr/item/IVM_1982_11_a7/