@incollection{AST_1974__19__25_0,
     author = {Bolley, Pierre and Camus, Jacques and Hanouzet, B.},
     title = {\'Etude de l'analyticit\'e et de la r\'egularit\'e {Gevrey} pour une classe de probl\`emes aux limites elliptiques et d\'eg\'en\'er\'es},
     booktitle = {Sur quelques \'equations aux d\'eriv\'ees partielles singuli\`eres},
     series = {Ast\'erisque},
     pages = {25--48},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {19},
     year = {1974},
     mrnumber = {372420},
     zbl = {0295.35035},
     language = {fr},
     url = {http://www.numdam.org/item/AST_1974__19__25_0/}
}