TY  - JOUR
AU  - M. G. Peretyat'kin
TI  - Semantically universal classes of models
JO  - Algebra i logika
PY  - 1991
SP  - 414
EP  - 431
VL  - 30
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1991_30_4_a2/
LA  - ru
ID  - AL_1991_30_4_a2
ER  -