%0 Journal Article
%A S. Yu. Maslov
%T Inverse method of establishing deducibility for non-prenex formulas of predicate calculus
%J Doklady Akademii Nauk
%D 1967
%P 22-25
%V 172
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1967_172_1_a4/
%G ru
%F DAN_1967_172_1_a4