@article{AIF_1972__22_4_193_0,
     author = {Chazarain, Jacques and Piriou, Alain},
     title = {Caract\'erisation des probl\`emes mixtes hyperboliques bien pos\'es},
     journal = {Annales de l'Institut Fourier},
     pages = {193--237},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {22},
     number = {4},
     year = {1972},
     doi = {10.5802/aif.438},
     zbl = {0234.35052},
     mrnumber = {48 #11794},
     language = {fr},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.438/}
}