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@article{DAN_1974_218_6_a3, author = {I. S. Negru}, title = {On algebraic properties of the totality of propositional logics}, journal = {Doklady Akademii Nauk}, pages = {1276--1279}, publisher = {mathdoc}, volume = {218}, number = {6}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_6_a3/} }
I. S. Negru. On algebraic properties of the totality of propositional logics. Doklady Akademii Nauk, Tome 218 (1974) no. 6, pp. 1276-1279. http://geodesic.mathdoc.fr/item/DAN_1974_218_6_a3/