%0 Journal Article
%A D. V. Solomatin
%T The ranks of planarity for~varieties~of~commutative~semigroups
%J Prikladnaâ diskretnaâ matematika
%D 2016
%P 50-64
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/PDM_2016_4_a3/
%G ru
%F PDM_2016_4_a3