%0 Journal Article
%A Ahmad Shafaat
%T Clusters of algebra
%J Algebra i logika
%D 1968
%P 109-116
%V 7
%N 5
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1968_7_5_a3/
%G en
%F AL_1968_7_5_a3