TY - JOUR AU - G. V. Davydov TI - A~proof method for the classical predicate calculus JO - Zapiski Nauchnykh Seminarov POMI PY - 1967 SP - 8 EP - 17 VL - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZNSL_1967_4_a1/ LA - ru ID - ZNSL_1967_4_a1 ER -