%0 Journal Article
%A Nándor Simányi
%A Domokos Szász
%T Hard ball systems are completely hyperbolic
%J Annals of mathematics
%D 1999
%V 149
%N 1
%U http://geodesic.mathdoc.fr/articles/10.2307/121019/
%R 10.2307/121019
%F 10_2307_121019