@incollection{JEDP_1977____66_0, author = {Ahmed Fitouhi}, title = {Fonction z\^eta {d'Epstein} pour un op\'erateur elliptique qui d\'eg\'en\`ere dans la direction normale}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, pages = {66--80}, publisher = {\'Ecole polytechnique}, year = {1977}, mrnumber = {80g:58048}, language = {fr}, url = {https://proceedings.centre-mersenne.org/item/JEDP_1977____66_0/} }