TY  - JOUR
AU  - Yu. L. Ershov
TI  - Skolem functions and constructive models
JO  - Algebra i logika
PY  - 1973
SP  - 644
EP  - 654
VL  - 12
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1973_12_6_a1/
LA  - ru
ID  - AL_1973_12_6_a1
ER  -