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@article{MS2_1978__43_166611, author = {Bengt Winzell}, title = {Sub-elliptic estimates for the oblique derivative problem.}, journal = {Mathematica Scandinavica}, pages = {169--176}, publisher = {mathdoc}, volume = {43}, year = {1978}, zbl = {0398.35031}, url = {http://geodesic.mathdoc.fr/item/MS2_1978__43_166611/} }
Bengt Winzell. Sub-elliptic estimates for the oblique derivative problem.. Mathematica Scandinavica, Tome 43 (1978), pp. 169-176. http://geodesic.mathdoc.fr/item/MS2_1978__43_166611/