%0 Journal Article
%A A. A. Urman
%T Groupoid of varieties of certain algebras
%J Algebra i logika
%D 1969
%P 241-250
%V 8
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1969_8_2_a6/
%G ru
%F AL_1969_8_2_a6