Introduction to the Qualitative Theory of Differential Systems

Inverse Problems in Ordinary Differential Equations and Applications

Introduction to the Qualitative Theory of Differential Systems Birkhauser Advanced Texts Basler Lehrbucher

Central Configurations, Periodic Orbits, and Hamiltonian Systems

New trends for Hamiltonian systems and celestial mechanics

Separatrix surfaces and invariant manifolds of a class of integrable Hamiltonian systems and their perturbations

Dynamics Through First-Order Differential Equations in the Configuration Space