Voir la notice de l'article provenant de la source Numdam
@article{AIHPA_1971__14_1_1_0, author = {Speer, E. R. and Westwater, M. J.}, title = {Generic {Feynman} amplitudes}, journal = {Annales de l'I.H.P. Physique th\'eorique}, pages = {1--55}, publisher = {Gauthier-Villars}, volume = {14}, number = {1}, year = {1971}, mrnumber = {284095}, zbl = {0208.27905}, language = {en}, url = {http://geodesic.mathdoc.fr/item/AIHPA_1971__14_1_1_0/} }
Speer, E. R.; Westwater, M. J. Generic Feynman amplitudes. Annales de l'I.H.P. Physique théorique, Tome 14 (1971) no. 1, pp. 1-55. http://geodesic.mathdoc.fr/item/AIHPA_1971__14_1_1_0/