TY  - JOUR
AU  - Ren, Zhihua
AU  - Yang, Jiazhong
TI  - On the C1 normal forms for hyperbolic vector fields
JO  - Comptes Rendus. Mathématique
PY  - 2003
SP  - 709
EP  - 712
VL  - 336
IS  - 9
PB  - Elsevier
UR  - http://www.numdam.org/articles/10.1016/S1631-073X(03)00173-0/
DO  - 10.1016/S1631-073X(03)00173-0
LA  - en
ID  - CRMATH_2003__336_9_709_0
ER  -