%0 Journal Article
%A M. Zakharyaschev
%T Syntax and semantics of modal logics that contain ${\rm S}4$
%J Algebra i logika
%D 1988
%P 659-689
%V 27
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/AL_1988_27_6_a3/
%G ru
%F AL_1988_27_6_a3