Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1981_20_4_a5, author = {V. V. Rybakov}, title = {Admissible rules for pretabular modal logics}, journal = {Algebra i logika}, pages = {440--464}, publisher = {mathdoc}, volume = {20}, number = {4}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1981_20_4_a5/} }
V. V. Rybakov. Admissible rules for pretabular modal logics. Algebra i logika, Tome 20 (1981) no. 4, pp. 440-464. http://geodesic.mathdoc.fr/item/AL_1981_20_4_a5/