A. Ambrosetti

Variational and Local Methods in the Study of Hamiltonian Systems: Proceedings of the Workshop

A. Ambrosetti, G. F. Dell'Antonio, 1995 .

On the inversion of some differentiable mappings with singularities between Banach spaces

A. Ambrosetti, A. Ambrosetti, G. Prodi, 1972 .

Nonlinear functional analysis and applications to differential equations : proceedings of the second School ICTP, Trieste, Italy, 21 April-9 May 1997

Ivar Ekeland, A. Ambrosetti, I. Ekeland, 1998 .

Periodic solutions of a class of Hamiltonian systems with singularities

Ivar Ekeland, A. Ambrosetti, I. Ekeland, 1990, Proceedings of the Royal Society of Edinburgh: Section A Mathematics.