TY  - JOUR
AU  - A. V. Chagrov
TI  - A decidable modal logic for which the admissibility of
JO  - Algebra i logika
PY  - 1992
SP  - 83
EP  - 93
VL  - 31
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1992_31_1_a5/
LA  - ru
ID  - AL_1992_31_1_a5
ER  -