@article{RLINA_1983_8_75_1-2_a2,
     author = {Jannelli, Enrico},
     title = {Weakly hyperbolic equations of second order well-posed in some {Gevrey} classes},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti della Classe di scienze fisiche, matematiche e naturali},
     pages = {19--23},
     publisher = {mathdoc},
     volume = {Ser. 8, 75},
     number = {1-2},
     year = {1983},
     zbl = {0575.35047},
     mrnumber = {0780803},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLINA_1983_8_75_1-2_a2/}
}