@incollection{JEDP_1975____263_0, author = {Pham The Lai}, title = {Estimation du reste dans la th\'eorie spectrale d'une classe de probl\`emes d'op\'erateur elliptiques d\'eg\'en\'er\'es}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, pages = {263--277}, publisher = {\'Ecole polytechnique}, year = {1975}, mrnumber = {487073}, language = {fr}, url = {https://proceedings.centre-mersenne.org/item/JEDP_1975____263_0/} }