We will explains some details of the proof of the previous seminar, concerning the quantization rule of resonances when the trapped set of the corresponding Hamiltonian system consists of hyperbolic fixed points and associated homoclinic and heteroclinic trajectories. (joint work with Jean-Fran¥c cois Bony (Bordeaux), Thierry Ramond (Paris XI) and Maher Zerzeri (Paris XIII)).