%0 Journal Article
%A S. V. Sizyi
%T Critical theories of some classes of graphs and unary
%J Algebra i logika
%D 1989
%P 454-462
%V 28
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1989_28_4_a6/
%G ru
%F AL_1989_28_4_a6