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Colombini, F., De Giorgi, E. &Spagnolo, S., Sur les équations hyperboliques, avec des coefficients qui ne dépendent que du temps.Ann. Scuola Norm. Sup. Pisa, 6 (1979), 511–559.
Mizohata, S.,The theory of partial differential equations. University Press, Cambridge 1973.
Whitney, H., Analytic extensions of differentiable functions defined in closed sets.Trans. Amer. Math. Soc., 36 (1934), 63–89.
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Colombini, F., Spagnolo, S. An example of a weakly hyperbolic Cauchy problem not well posed inC ∞ . Acta Math 148, 243–253 (1982). https://doi.org/10.1007/BF02392730
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DOI: https://doi.org/10.1007/BF02392730