@article{AIHPA_1977__26_1_87_0,
     author = {Speer, Eug\`ene R.},
     title = {Mass singularities of generic {Feynman} amplitudes},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {87--105},
     publisher = {Gauthier-Villars},
     volume = {26},
     number = {1},
     year = {1977},
     mrnumber = {443643},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AIHPA_1977__26_1_87_0/}
}