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@article{DAN_1962_147_5_a10, author = {V. A. Matulis}, title = {Two variants of the classical predicate calculus without structural inference rules}, journal = {Doklady Akademii Nauk}, pages = {1029--1031}, publisher = {mathdoc}, volume = {147}, number = {5}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_147_5_a10/} }
V. A. Matulis. Two variants of the classical predicate calculus without structural inference rules. Doklady Akademii Nauk, Tome 147 (1962) no. 5, pp. 1029-1031. http://geodesic.mathdoc.fr/item/DAN_1962_147_5_a10/