%0 Journal Article
%A A. N. Trakhtman
%T Covering elements in the lattice of varieties of algebras
%J Matematičeskie zametki
%D 1974
%P 307-312
%V 15
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MZM_1974_15_2_a16/
%G ru
%F MZM_1974_15_2_a16