On the number of limit cycles bifurcating from a linear center
About the number of limit cycles that bifurcate from a linear center
On limit cycles that bifurcates from a center in a planar polynomial system.
Non-smooth dynamical systems: qualitative theory and structural stability
On the number of limit cycles that bifurcate from a linear center
Bifurcation of limit cycles in smooth piecewise systems and an application in Medi...