%0 Journal Article %A Yu. L. Vasil'ev %T Irreducible disjunctive normal forms for certain classes of truth functions %J Doklady Akademii Nauk %D 1962 %P 263-265 %V 142 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1962_142_2_a0/ %G ru %F DAN_1962_142_2_a0