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@article{MZ_1996__222_3_174899, author = {Mitsuru Sugimoto}, title = {Estimates for hyperbolic equations with non-convex characteristics.}, journal = {Mathematische Zeitschrift}, pages = {521--532}, publisher = {mathdoc}, volume = {222}, number = {3}, year = {1996}, zbl = {0867.35013}, url = {http://geodesic.mathdoc.fr/item/MZ_1996__222_3_174899/} }
Mitsuru Sugimoto. Estimates for hyperbolic equations with non-convex characteristics.. Mathematische Zeitschrift, Tome 222 (1996) no. 3, pp. 521-532. http://geodesic.mathdoc.fr/item/MZ_1996__222_3_174899/