Poisson formulæ for resonances.
Polynomial bounds on the number of scattering poles for symmetric systems
Potential Scattering in a Homogeneous Electrostatic Field.
Prolongement méromorphe de la matrice de scattering pour des problèmes à deux corps à longue portée
Propagation and local-decay properties for long-range scattering of quantum three-body systems
Properties of the scattering amplitude for electron-atom collisions