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@article{AL_1985_24_4_a4, author = {A. V. Chagrov}, title = {Varieties of logical matrices}, journal = {Algebra i logika}, pages = {426--489}, publisher = {mathdoc}, volume = {24}, number = {4}, year = {1985}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1985_24_4_a4/} }
A. V. Chagrov. Varieties of logical matrices. Algebra i logika, Tome 24 (1985) no. 4, pp. 426-489. http://geodesic.mathdoc.fr/item/AL_1985_24_4_a4/