List of citations in Numdam for : Closed geodesics for the Jacobi metric and periodic solutions of prescribed energy of natural hamiltonian systems

Annales de l'I.H.P. Analyse non linéaire, Volume 1 (1984) no. 5, pp. 401-412.

Annales de l'I.H.P. Analyse non linéaire, Volume 31 (2014) no. 3, pp. 531-554.

Annales de l'I.H.P. Analyse non linéaire, Volume 4 (1987) no. 4, pp. 307-335.

Annales de l'I.H.P. Analyse non linéaire, Volume 1 (1984) no. 5, pp. 379-400.