%0 Journal Article
%A V. A. Yankov
%T On certain superconstructive propositional calculi
%J Doklady Akademii Nauk
%D 1963
%P 796-798
%V 151
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1963_151_4_a14/
%G ru
%F DAN_1963_151_4_a14