@article{05726973,
title = {Existence of global entropy solutions to a non-strictly hyperbolic system with a source.},
journal = {Revista Colombiana de Matem\'aticas},
volume = {40},
year = {2006},
pages = {53-64},
zbl = {1189.35046},
language = {en},
url = {http://dml.mathdoc.fr/item/05726973}
}
Yan, Rei-Fang. Existence of global entropy solutions to a non-strictly hyperbolic system with a source.. Revista Colombiana de Matemáticas, Tome 40 (2006) pp. 53-64. http://gdmltest.u-ga.fr/item/05726973/