%0 Journal Article
%A V. B. Shehtman
%T Squares of modal logics with additional connectives
%J Trudy Matematicheskogo Instituta imeni V.A. Steklova
%D 2012
%P 721-777
%V 67
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/RM_2012_67_4_a2/
%G en
%F RM_2012_67_4_a2