TY  - JOUR
AU  - V. V. Rybakov
TI  - Bases of admissible rules of the logics ${\rm S}4$ and
JO  - Algebra i logika
PY  - 1985
SP  - 87
EP  - 107
VL  - 24
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_1985_24_1_a5/
LA  - ru
ID  - AL_1985_24_1_a5
ER  -