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@article{AL_1975_14_2_a0, author = {A. I. Budkin and V. A. Gorbunov}, title = {On the theory of quasivarieties of algebraic systems}, journal = {Algebra i logika}, pages = {123--142}, publisher = {mathdoc}, volume = {14}, number = {2}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1975_14_2_a0/} }
A. I. Budkin; V. A. Gorbunov. On the theory of quasivarieties of algebraic systems. Algebra i logika, Tome 14 (1975) no. 2, pp. 123-142. http://geodesic.mathdoc.fr/item/AL_1975_14_2_a0/