TY  - JOUR
AU  - M. Zakharyaschev
TI  - Syntax and semantics of modal logics that contain ${\rm S}4$
JO  - Algebra i logika
PY  - 1988
SP  - 659
EP  - 689
VL  - 27
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1988_27_6_a3/
LA  - ru
ID  - AL_1988_27_6_a3
ER  -