Browsing by Author "Aziz, Waleed"
Aziz, Waleed; Llibre Saló, Jaume; Pantazi, Chara (2014-03-20)
Restricted access - publisher's policyWe characterize the centers of the quasi-homogeneous planar polynomial differential systems of degree three. Such systems do not admit isochronous centers. At most one limit cycle can bifurcate from the periodic orbits of ...