@article{AIHPA_1983__38_2_113_0,
     author = {Strumia, Alberto},
     title = {Some remarks on conservative symmetric-hyperbolic systems governing relativistic theories},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {113--120},
     publisher = {Gauthier-Villars},
     volume = {38},
     number = {2},
     year = {1983},
     mrnumber = {705335},
     zbl = {0522.76129},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1983__38_2_113_0/}
}