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@article{MZ_1967__101_170830, author = {Robert L. Borrelli}, title = {The {...-Fredholm} {Property} for {Oblique} {Derivative} {Problems.}}, journal = {Mathematische Zeitschrift}, pages = {103--122}, publisher = {mathdoc}, volume = {101}, year = {1967}, zbl = {0148.35501}, url = {http://geodesic.mathdoc.fr/item/MZ_1967__101_170830/} }
Robert L. Borrelli. The ...-Fredholm Property for Oblique Derivative Problems.. Mathematische Zeitschrift, Tome 101 (1967), pp. 103-122. http://geodesic.mathdoc.fr/item/MZ_1967__101_170830/