%0 Journal Article %A M. Yu. Trofimov %T Definability in algebraically closed systems %J Algebra i logika %D 1975 %P 320-327 %V 14 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1975_14_3_a5/ %G ru %F AL_1975_14_3_a5