TY  - JOUR
AU  - Markov, Yavor
TI  - Limit Cycles of Perturbations of a Class of Quadratic Hamiltonian Vector Fields
JO  - Serdica Mathematical Journal
PY  - 1996
SP  - 91
EP  - 108
VL  - 22
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SMJ2_1996_22_2_a2/
LA  - en
ID  - SMJ2_1996_22_2_a2
ER  -