%0 Journal Article
%A M. V. Zakharyaschev
%T Modal companions of superintuitionistic logics: syntax, semantics, and preservation theorems
%J Sbornik. Mathematics
%D 1991
%P 277-289
%V 68
%N 1
%U http://geodesic.mathdoc.fr/item/SM_1991_68_1_a13/
%G en
%F SM_1991_68_1_a13