@incollection{AST_1984__113-114__227_0,
     author = {Jacobsson, Calle},
     title = {On local flat homomorphisms and the {Yoneda} ext-algebra of the fibre},
     booktitle = {Homotopie alg\'ebrique et alg\`ebre locale},
     series = {Ast\'erisque},
     pages = {227--233},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {113-114},
     year = {1984},
     mrnumber = {749061},
     zbl = {0572.13002},
     language = {en},
     url = {http://archive.numdam.org/item/AST_1984__113-114__227_0/}
}