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@article{AL_1991_30_3_a3, author = {V. A. Lyubetskii}, title = {Intuitionistic theory of algebraic systems and}, journal = {Algebra i logika}, pages = {320--332}, publisher = {mathdoc}, volume = {30}, number = {3}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1991_30_3_a3/} }
V. A. Lyubetskii. Intuitionistic theory of algebraic systems and. Algebra i logika, Tome 30 (1991) no. 3, pp. 320-332. http://geodesic.mathdoc.fr/item/AL_1991_30_3_a3/