TY  - JOUR
AU  - A. I. Valitskas
TI  - Absence of a finite basis of quasi-identities for a
JO  - Algebra i logika
PY  - 1982
SP  - 13
EP  - 36
VL  - 21
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1982_21_1_a1/
LA  - ru
ID  - AL_1982_21_1_a1
ER  -