@incollection{AST_1990__183__7_0,
     author = {Szpiro, L.},
     title = {Discriminant et conducteur des courbes elliptiques},
     booktitle = {S\'eminaire sur les pinceaux de courbes elliptiques (\`a la recherche de {\guillemotleft}Mordell effectif{\guillemotright})},
     editor = {Spziro Lucien},
     series = {Ast\'erisque},
     pages = {7--18},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {183},
     year = {1990},
     mrnumber = {1065151},
     zbl = {0742.14026},
     language = {fr},
     url = {http://archive.numdam.org/item/AST_1990__183__7_0/}
}