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@article{IVM_1967_5_a1, author = {E. I. Grindlinger}, title = {On the question of identities in semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {6--12}, publisher = {mathdoc}, number = {5}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1967_5_a1/} }
E. I. Grindlinger. On the question of identities in semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1967), pp. 6-12. http://geodesic.mathdoc.fr/item/IVM_1967_5_a1/