%0 Journal Article %A A. Kungozhin %T Existentially closed and maximal models in positive logic %J Algebra i logika %D 2012 %P 748-765 %V 51 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_2012_51_6_a3/ %G ru %F AL_2012_51_6_a3