au.\*:("DE SOUZA RIBEIRO, H")
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Uniqueness in a doubly characteristic Cauchy problemBERGAMASCO, A. P; DE SOUZA RIBEIRO, H.Pacific journal of mathematics. 1989, Vol 136, Num 2, pp 229-240, issn 0030-8730Article
On the spectrum of evolution operators generated by hyperbolic systemsFREIRIA NEVES, A; DE SOUZA RIBEIRO, H; LOPES, O et al.Journal of functional analysis. 1986, Vol 67, Num 3, pp 320-344, issn 0022-1236Article
