@misc{RCM_2008_42_2_a0,
     title = {Existence of global weak solutions to a symmetrically hyperbolic system with a source},
     journal = {Revista colombiana de matematicas},
     pages = {221--232},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {2008},
     url = {http://geodesic.mathdoc.fr/item/RCM_2008_42_2_a0/}
}