TY  - JOUR
AU  - V. V. Rybakov
TI  - Decidability of admissibility in the modal system~$\mathrm{Grz}$ and in intuitionistic logic
JO  - Izvestiya. Mathematics 
PY  - 1987
SP  - 589
EP  - 608
VL  - 28
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM2_1987_28_3_a6/
LA  - en
ID  - IM2_1987_28_3_a6
ER  -