Electromagnetic processes at low momentum transfer : a review for users M.J. Parizet, E. Borie, B. Grossetête, D.B. Isabelle and J. Proriol Ann. Phys. Fr., 9 1 (1984) 103-210 Published online: 01 June 2004 DOI: 10.1051/anphys:0198400901010300