%0 Journal Article %A B. M. Vernikov %T Special Elements of the Lattice of Overcommutative Varieties of Semigroups %J Matematičeskie zametki %D 2001 %P 670-678 %V 70 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZM_2001_70_5_a2/ %G ru %F MZM_2001_70_5_a2