TY  - JOUR
AU  - A. N. Gavryushkin
TI  - Complexity of Ehrenfeucht models
JO  - Algebra i logika
PY  - 2006
SP  - 507
EP  - 519
VL  - 45
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2006_45_5_a0/
LA  - ru
ID  - AL_2006_45_5_a0
ER  -