%0 Journal Article %A S. S. Marchenkov %T $S$-classification of functions of many-valued logic %J Diskretnaya Matematika %D 1997 %P 125-152 %V 9 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DM_1997_9_3_a10/ %G ru %F DM_1997_9_3_a10