@article{ASNSP_2006_5_5_4_465_0,
     author = {Kajitani, Kunihiko and Yuzawa, Yasuo},
     title = {The {Cauchy} problem for hyperbolic systems with {H\"older} continuous coefficients with respect to the time variable},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {465--482},
     publisher = {Scuola Normale Superiore, Pisa},
     volume = {Ser. 5, 5},
     number = {4},
     year = {2006},
     mrnumber = {2297720},
     zbl = {1170.35474},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_2006_5_5_4_465_0/}
}