%0 Journal Article %A V. V. Rybakov %T Bases of admissible rules of the logics ${\rm S}4$ and %J Algebra i logika %D 1985 %P 87-107 %V 24 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AL_1985_24_1_a5/ %G ru %F AL_1985_24_1_a5