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@article{AL_1970_9_3_a1, author = {S. L. Bloom and D. J. Brown and R. Suszko}, title = {Some theorems on abstract logics}, journal = {Algebra i logika}, pages = {274--280}, publisher = {mathdoc}, volume = {9}, number = {3}, year = {1970}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AL_1970_9_3_a1/} }
S. L. Bloom; D. J. Brown; R. Suszko. Some theorems on abstract logics. Algebra i logika, Tome 9 (1970) no. 3, pp. 274-280. http://geodesic.mathdoc.fr/item/AL_1970_9_3_a1/