[1]
Dias, J.P. e Figueira, M. 1991. On the Existence of Weak Solutions for a Semilinear Singular Hyperbolic Systems. Revista Matemática Complutense. 4, 1 (jan. 1991), 137. DOI:https://doi.org/10.5209/rev_REMA.1991.v4.n1.18009.