%0 Journal Article %A A. V. Kuznetsov %A M. F. Raţă %T A criterion for functional completeness in classical first-order predicate logic %J Doklady Akademii Nauk %D 1979 %P 540-544 %V 249 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1979_249_3_a5/ %G ru %F DAN_1979_249_3_a5