%0 Journal Article %A S. G. Mamikonyan %T Varieties of finitely approximable semigroups %J Sbornik. Mathematics %D 1972 %P 349-355 %V 17 %N 3 %U http://geodesic.mathdoc.fr/item/SM_1972_17_3_a1/ %G en %F SM_1972_17_3_a1