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@article{DAN_1963_150_2_a1, author = {I. I. Valuts\`e}, title = {Left ideals of the semigroup of endomorphisms of a free universal algebra}, journal = {Doklady Akademii Nauk}, pages = {235--237}, publisher = {mathdoc}, volume = {150}, number = {2}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1963_150_2_a1/} }
I. I. Valutsè. Left ideals of the semigroup of endomorphisms of a free universal algebra. Doklady Akademii Nauk, Tome 150 (1963) no. 2, pp. 235-237. http://geodesic.mathdoc.fr/item/DAN_1963_150_2_a1/