@article{RMC_1999_1999_1_a20,
     author = {Bressan, Alberto},
     title = {Sistemas hiperb\'olicos de leyes de conservaci\'on.},
     journal = {Revista matem\'atica complutense},
     pages = {135-198},
     year = {1999},
     volume = {12},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMC_1999_1999_1_a20/}
}