%0 Journal Article
%A I. A. Lavrov
%T The effective non-separability of the set of identically true
%J Algebra i logika
%D 1963
%P 5-18
%V 2
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1963_2_1_a0/
%G ru
%F AL_1963_2_1_a0