TY  - JOUR
AU  - A. Kungozhin
TI  - Existentially closed and maximal models in positive logic
JO  - Algebra i logika
PY  - 2012
SP  - 748
EP  - 765
VL  - 51
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2012_51_6_a3/
LA  - ru
ID  - AL_2012_51_6_a3
ER  -