%0 Journal Article %A B. M. Vernikov %T Semigroup Varieties on Whose Free Objects Almost All Fully Invariant Congruences are Weakly Permutable %J Algebra i logika %D 2004 %P 635-649 %V 43 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2004_43_6_a0/ %G ru %F AL_2004_43_6_a0