On the number of limit cycles bifurcating from a linear center
Limit cycles for piecewise smooth dynamical systems in dimension n>2 and in compac...
On limit cycles that bifurcates from a center in a planar polynomial system.
Periodic solutions dor discontinuous dynamical systems with symmetry
Limit cycles, regularization and period function of piecewise smooth planar systems.
Study of discontinuous piecewise linear vector fields via Averaging method