TY  - JOUR
AU  - Llibre, Jaume
AU  - Schlomiuk, Dana
TI  - The Geometry of Quadratic Differential Systems with a Weak Focus of Third Order
JO  - Canadian journal of mathematics
PY  - 2004
SP  - 310
EP  - 343
VL  - 56
IS  - 2
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2004-015-2/
DO  - 10.4153/CJM-2004-015-2
ID  - 10_4153_CJM_2004_015_2
ER  -