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@article{IVM_1963_3_a12, author = {E. S. Lyapin}, title = {On maximal, two-sided stable orderings in semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {88--94}, publisher = {mathdoc}, number = {3}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1963_3_a12/} }
E. S. Lyapin. On maximal, two-sided stable orderings in semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1963), pp. 88-94. http://geodesic.mathdoc.fr/item/IVM_1963_3_a12/