%0 Journal Article %A Tri, N.M. %T On the Gevrey analyticity of solutions of semilinear perturbations of powers of the Mizohata operator. %J Rendiconti del seminario matematico %D 1999 %P 37-57 %V 57 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/RSM_1999__57_1_128250/ %G en %F RSM_1999__57_1_128250