%0 Journal Article %A G. V. Davydov %T A proof method for the classical predicate calculus %J Zapiski Nauchnykh Seminarov POMI %D 1967 %P 8-17 %V 4 %U http://geodesic.mathdoc.fr/item/ZNSL_1967_4_a1/ %G ru %F ZNSL_1967_4_a1