TY  - BOOK
AU  - Christopher, C. 
AU  - Castellet, Manuel 
AU  - Li, Chengzhi
TI  - Limit cycles of differential equations
SN  - 9783764384104
U1  - 517.9 
PY  - 2007///
PB  - CRM
KW  - CHERKAS SYSTEM
KW  - DARBOUX INTEGRABILITY
KW  - DIFFERENTIAL EQUATION
ER  -