Variational and local methods in the study of hamiltonian systems : proceedings of the workshop : International Centre for Theoretical Physics, Trieste, Italy, 24-28 October, 1995

Fermat principles in general relativity and the existence of light rays on Lorentzian manifolds, D. Fortunato and A. Masiello some recent results concerning quasi-periodic solutions for a nonlinear string equation, I. Poschell homoclinics for a singular Hamiltonian system in R2, P.H. Rabinowitz Hamiltonian systems and nonlinear Dirac equations, E. Sere multiplicity on homoclinic orbits in fourth-order conservative systems, B. Buffoni asymptotic behaviour for a class of multibump solutions to Duffing-like systems, P. Caldiroli et al on a class of strongly indefinite functionals, D.G. Costa and C.A. Magalhaes transversal intersection of separatrices and non-existence of an analytical integral in multi-dimensional systems, S.A. Dovbysh on the periodic solutions of n-body type problems, H. Riahi odd Poisson bracket in Hamilton's dynamics, V.A. Soroka non-collision periodic solutions of fixed energy for a symmetric n-body type problem, E. Vitilarro and other papers.