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@article{AL_1966_5_4_a4, author = {M. A. Taitslin}, title = {On elementary theories of commutative semigroups}, journal = {Algebra i logika}, pages = {55--89}, publisher = {mathdoc}, volume = {5}, number = {4}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1966_5_4_a4/} }
M. A. Taitslin. On elementary theories of commutative semigroups. Algebra i logika, Tome 5 (1966) no. 4, pp. 55-89. http://geodesic.mathdoc.fr/item/AL_1966_5_4_a4/