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@article{MZ_1995__220_1_174820, author = {A. Alexandrou Himonas}, title = {On degenerate elliptic operators of infinite type.}, journal = {Mathematische Zeitschrift}, pages = {449--460}, publisher = {mathdoc}, volume = {220}, number = {1}, year = {1995}, zbl = {0843.35020}, url = {http://geodesic.mathdoc.fr/item/MZ_1995__220_1_174820/} }
A. Alexandrou Himonas. On degenerate elliptic operators of infinite type.. Mathematische Zeitschrift, Tome 220 (1995) no. 1, pp. 449-460. http://geodesic.mathdoc.fr/item/MZ_1995__220_1_174820/