@article{SJL_1969___2_1_0,
     author = {Fotiadi, Dimitri},
     title = {D\'esingularisation et graphes de {Feynman}},
     journal = {S\'eminaire Jean Leray},
     pages = {1--171},
     publisher = {Coll\`ege de France},
     number = {2},
     year = {1969},
     language = {fr},
     url = {http://www.numdam.org/item/SJL_1969___2_1_0/}
}