Periodic solutions dor discontinuous dynamical systems with symmetry
Sliding motion in discontinuous dynamical systems: periodic solutions, homoclinic ...
Analysis of Functional Integral Equations, Generalized Ordinary Differential Equat...
Qualitative theory of ordinary differential equations: integrability, periodic orb...
Minimizers with discontinuous velocities and variational electrodynamics of point ...
Continuous or piecewise smooth dynamical systems on 2 and 3 dimensional manifolds.