@article{SEDP_1991-1992____A4_0,
     author = {Magnen, Jacques and Rivasseau, Vincent},
     title = {Groupe de renormalisation autour d'une sph\`ere},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:4},
     pages = {1--15},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1991-1992},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1991-1992____A4_0/}
}