Dulac's Problem and of the Focus Center on Two-Dimensional Manifolds
Lower bounds for local cyclicity for Kolmogorov systems on planar piecewise vector...
Continuous or piecewise smooth dynamical systems on 2 and 3 dimensional manifolds.
Sliding cycles of regularized piecewise smooth vector fields having higher order t...
On limit cycles in piecewise linear vector fields with algebraic discontinuity var...
Piecewise holomorphic systems and regularization of Filippov systems