%0 Journal Article
%A O. I. Bogoyavlenskii
%T Breaking solitons. VI.~Extension of systems of hydrodynamic type
%J Izvestiya. Mathematics 
%D 1992
%P 959-973
%V 39
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM2_1992_39_2_a1/
%G en
%F IM2_1992_39_2_a1