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@article{SF_1980__20_134413, author = {A.V. Tishchenko}, title = {The finiteness of a base of indentities for fiveelement monoids}, journal = {Semigroup forum}, pages = {171--186}, publisher = {mathdoc}, volume = {20}, year = {1980}, zbl = {0439.20036}, url = {http://geodesic.mathdoc.fr/item/SF_1980__20_134413/} }
A.V. Tishchenko. The finiteness of a base of indentities for fiveelement monoids. Semigroup forum, Tome 20 (1980), pp. 171-186. http://geodesic.mathdoc.fr/item/SF_1980__20_134413/