%0 Journal Article %A Alvarez-Estrada, R. F. %T Rigorous approach to elastic meson-nucleon scattering in non-relativistic quantum field theory. (I) : integral equation and Schrödinger ket %J Annales de l'I.H.P. Physique théorique %D 1981 %P 253-276 %V 34 %N 3 %I Gauthier-Villars %U http://geodesic.mathdoc.fr/item/AIHPA_1981__34_3_253_0/ %G en %F AIHPA_1981__34_3_253_0