%0 Journal Article %A Calvo, Daniela %T Cauchy problem in multi-anisotropic Gevrey classes for weakly hyperbolic operators %J Bollettino della Unione matematica italiana %D 2006 %P 21-50 %V 9B %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/BUMI_2006_8_9B_1_a1/ %G it %F BUMI_2006_8_9B_1_a1