TY  - JOUR
AU  - Nándor Simányi
AU  - Domokos Szász
TI  - Hard ball systems are completely hyperbolic
JO  - Annals of mathematics
PY  - 1999
VL  - 149
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AM_1999_149_1_a1/
ID  - AM_1999_149_1_a1
ER  -