TY  - DATA
AU  - Artes, Joan C.
AU  - Kooij, Robert E.,Llibre, Jaume.
TI  - Structurally stable quadratic vector fields 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470402280 (online)
PY  - 1998///
CY  - Providence, R.I.
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0639
ER  -