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@article{JRAM_1986__372_152877, author = {M., Wendland, W.L. Costabel}, title = {Strong ellipticity of boundary integral operators.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {34--63}, publisher = {mathdoc}, volume = {372}, year = {1986}, zbl = {0628.35027}, url = {http://geodesic.mathdoc.fr/item/JRAM_1986__372_152877/} }
M., Wendland, W.L. Costabel. Strong ellipticity of boundary integral operators.. Journal für die reine und angewandte Mathematik, Tome 372 (1986), pp. 34-63. http://geodesic.mathdoc.fr/item/JRAM_1986__372_152877/