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@article{MASLO_1976__26_2_a7, author = {Dvure\v{c}enskij, Anatolij}, title = {On some properties of transformations of a logic}, journal = {Mathematica slovaca}, pages = {131--137}, publisher = {mathdoc}, volume = {26}, number = {2}, year = {1976}, mrnumber = {0429667}, zbl = {0357.28013}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1976__26_2_a7/} }
Dvurečenskij, Anatolij. On some properties of transformations of a logic. Mathematica slovaca, Tome 26 (1976) no. 2, pp. 131-137. http://geodesic.mathdoc.fr/item/MASLO_1976__26_2_a7/