1. R.O. Barrachina: Nucl. Instr. Meth. B124, 198 (1997)
2. J. Gillespie: Final State Interactions, Holden-Day Inc., San Francisco (1964)
3. J.R. Taylor: Scattering Theory: The Quantum Theory on Nonrelativitic Collisions, John Wiley & Sons, New York (1972)
4. E.P. Wigner: Phys. Rev. 73, 1002 (1948)
5. P. Macri and R.O. Barrachina: Phys. Rev. A65, 062718 (2002)