@article{02187259,
title = {The critical case for a semilinear weakly hyperbolic equation.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2004},
year = {2004},
zbl = {1072.35556},
language = {en},
url = {http://dml.mathdoc.fr/item/02187259}
}
Fanelli, Luca; Lucente, Sandra. The critical case for a semilinear weakly hyperbolic equation.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2004 (2004) . http://gdmltest.u-ga.fr/item/02187259/