@article{1248983035, author = {Ishida, Haruhisa}, title = {Levi conditions to the Gevrey well-posedness for hyperbolic operators of higher order}, journal = {J. Math. Kyoto Univ.}, volume = {49}, number = {1}, year = {2009}, pages = { 173-191}, language = {en}, url = {http://dml.mathdoc.fr/item/1248983035} }
Ishida, Haruhisa. Levi conditions to the Gevrey well-posedness for hyperbolic operators of higher order. J. Math. Kyoto Univ., Tome 49 (2009) no. 1, pp. 173-191. http://gdmltest.u-ga.fr/item/1248983035/