TY  - JOUR
TI  - Sessions of the seminar “Algebra i Logika”
JO  - Algebra i logika
PY  - 1987
SP  - 121
EP  - 122
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1987_26_1_a6/
LA  - ru
ID  - AL_1987_26_1_a6
ER  -