@article{02168714,
title = {A characteristic initial value problem for a strictly hyperbolic system.},
journal = {International Journal of Mathematics and Mathematical Sciences},
volume = {2004},
year = {2004},
pages = {1623-1632},
doi = {10.1155/S0161171204308045},
zbl = {1065.35174},
language = {en},
url = {http://dml.mathdoc.fr/item/02168714}
}
Iraniparast, Nezam. A characteristic initial value problem for a strictly hyperbolic system.. International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 1623-1632. doi : 10.1155/S0161171204308045. http://gdmltest.u-ga.fr/item/02168714/