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@article{AL_1993_32_3_a5, author = {A. G. Pinus and I. Chajda}, title = {Quasi-orders on universal algebras}, journal = {Algebra i logika}, pages = {308--325}, publisher = {mathdoc}, volume = {32}, number = {3}, year = {1993}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1993_32_3_a5/} }
A. G. Pinus; I. Chajda. Quasi-orders on universal algebras. Algebra i logika, Tome 32 (1993) no. 3, pp. 308-325. http://geodesic.mathdoc.fr/item/AL_1993_32_3_a5/