Bifurcations of nested invariant tori and invariant sets of Lotka-Volterra differe...
Averaging theory for finding periodic solutions of Carathéodory differential equat...
Topological methods in the study of periodic solutions of non-smooth differential ...
Invariant Sets in differential Dynamical Systems: Periodic orbits, Invariant Tori ...
Averaging theory for studying invariant tori and periodic behavior in differential...