TY  - BOOK
AU  - Chow Shui-Nee
AU  - Li Chengzhi
AU  - Wang Duo
TI  - Normal forms and bifurcation of planar vector fields
SN  - 0-521-37226-7
U1  - 515.35 
PY  - 1994///
CY  - Cambridge
PB  - CUP
KW  - Bifurcation theory
KW  - Normal forms(Mathematics)
KW  - Vector fields
ER  -