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@article{PORMA_1982__41_1-4_115509, author = {Grisvard, Pierre}, title = {Singular solutions of elliptic boundary value problems in polyhedra}, journal = {Portugaliae mathematica}, pages = {367--382}, publisher = {mathdoc}, volume = {41}, number = {1-4}, year = {1982}, mrnumber = {0766865}, zbl = {0567.35025}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1982__41_1-4_115509/} }
Grisvard, Pierre. Singular solutions of elliptic boundary value problems in polyhedra. Portugaliae mathematica, Tome 41 (1982) no. 1-4, pp. 367-382. http://geodesic.mathdoc.fr/item/PORMA_1982__41_1-4_115509/