TY  - JOUR
AU  - Sáez, Eduardo
AU  - Stange, Eduardo
AU  - Szántó, Iván
TI  - Coexistence of small and large amplitude limit cycles of polynomial differential systems of degree four
JO  - Czechoslovak Mathematical Journal
PY  - 2007
SP  - 105
EP  - 114
VL  - 57
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMJ_2007__57_1_a8/
LA  - en
ID  - CMJ_2007__57_1_a8
ER  -