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@article{AL_1989_28_5_a1, author = {I. P. Bestsennyi}, title = {Quasi-identities of finite unary algebras}, journal = {Algebra i logika}, pages = {493--512}, publisher = {mathdoc}, volume = {28}, number = {5}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1989_28_5_a1/} }
I. P. Bestsennyi. Quasi-identities of finite unary algebras. Algebra i logika, Tome 28 (1989) no. 5, pp. 493-512. http://geodesic.mathdoc.fr/item/AL_1989_28_5_a1/