COLOMBINI, Ferruccio; DEL SANTO, Daniele; KINOSHITA, Tamotu. Gevrey-well-posedness for weakly hyperbolic operators with Hölder-continuous coefficients. Mathematica Scandinavica, Berkeley, CA, United States, v. 94, n. 2, p. 267–294, 2004. DOI: 10.7146/math.scand.a-14443. Disponível em: https://journals.msp.org/mscand/article/view/776. Acesso em: 24 jul. 2026.