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@article{IVM_1998_11_a13, author = {V. V. Butakov and L. M. Martynov}, title = {Semigroups all of whose noncyclic subsemigroups are ideals}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {94--96}, publisher = {mathdoc}, number = {11}, year = {1998}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1998_11_a13/} }
V. V. Butakov; L. M. Martynov. Semigroups all of whose noncyclic subsemigroups are ideals. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 11 (1998), pp. 94-96. http://geodesic.mathdoc.fr/item/IVM_1998_11_a13/