@article{SEDP_1979-1980____A24_0,
     author = {Ta-Tsien, Li},
     title = {Probl\`emes aux limites et solutions discontinues pour les syst\`emes hyperboliques quasi lin\'eaires d'ordre 1},
     journal = {S\'eminaire \'Equations aux d\'eriv\'ees partielles (Polytechnique) dit aussi "S\'eminaire Goulaouic-Schwartz"},
     note = {talk:23},
     pages = {1--21},
     publisher = {Ecole Polytechnique, Centre de Math\'ematiques},
     year = {1979-1980},
     zbl = {0468.35063},
     language = {fr},
     url = {http://archive.numdam.org/item/SEDP_1979-1980____A24_0/}
}