%0 Journal Article
%A G. G. Laptev
%T Absence of solutions of differential inequalities and systems of hyperbolic type in conic domains
%J Izvestiya. Mathematics 
%D 2002
%P 1147-1170
%V 66
%N 6
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_2002_66_6_a3/
%G en
%F IM2_2002_66_6_a3