%0 Journal Article %A I.O. Korjakov %T A sketch of the lattice of commutative nilpotent semigroup varieties. %J Semigroup forum %D 1982 %P 285-318 %V 24 %I mathdoc %U http://geodesic.mathdoc.fr/item/SF_1982__24_134553/ %F SF_1982__24_134553