%0 Journal Article
%A Liu, Chun-Gen
%A Long, Yiming
%T Hyperbolic characteristics on star-shaped hypersurfaces
%J Annales de l'I.H.P. Analyse non linéaire
%D 1999
%P 725-746
%V 16
%N 6
%I Gauthier-Villars
%U http://archive.numdam.org/item/AIHPC_1999__16_6_725_0/
%G en
%F AIHPC_1999__16_6_725_0