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@article{MAN_1984__268_182917, author = {Hansen S\"onke}, title = {Singularities of {Transmission} {Problems.}}, journal = {Mathematische Annalen}, pages = {233--254}, publisher = {mathdoc}, volume = {268}, year = {1984}, zbl = {0523.58041}, url = {http://geodesic.mathdoc.fr/item/MAN_1984__268_182917/} }
Hansen Sönke. Singularities of Transmission Problems.. Mathematische Annalen, Tome 268 (1984), pp. 233-254. http://geodesic.mathdoc.fr/item/MAN_1984__268_182917/