@article{SJL_1961-1962____A2_0,
     author = {G\r{a}rding, L.},
     title = {Probl\`eme de {Cauchy} pour les \'equations quasi-lin\'eaires strictement hyperboliques},
     journal = {S\'eminaire Jean Leray},
     note = {talk:2},
     pages = {1--10},
     publisher = {Coll\`ege de France},
     year = {1961-1962},
     language = {fr},
     url = {http://www.numdam.org/item/SJL_1961-1962____A2_0/}
}