1. P. Hodgson, The optical model of elastic scattering (Clarendon Press, Oxford, 1963)
2. P. Hodgson, The optical model of elastic scattering (Clarendon Press, Oxford, 1971)
3. P. Hodgson, “The nuclear optical model: introductory overview”, Proceedings of the Meeting on Nucleon nucleus Optical Model up to 200 MeV, Paris: OECD (1997)
4. J. Raynal, "Optical model and coupled-channel calculations in nuclear physics", in: Computing as a language of physics, ICTP International Seminar Course, Trieste, Italy, 1971, Report IAEA-SMR-9/8 International Atomic Energy Agency, Vienna, Austria, pp. 281-322
5. "ECIS96" , in: Proc.OECD/NEA Specialists Meeting on Nucleon-Nucleus Optical Model to 200 MeV, Bruyères-le-Châtel, France, 1997, pp. 159-166 (see also www.nea.fr/html/science/om200/). ECIS code distributed by NEA DATA BANK (1972)