%0 Journal Article
%A I. Kubiaczyk
%T Existence theorem for multivalued hyperbolic equation
%J Commentationes Mathematicae
%D 1987
%P  115-119
%V 27
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v27i1.6191/
%R 10.14708/cm.v27i1.6191
%G pl
%F 10_14708_cm_v27i1_6191