@article{1250522871,
author = {Igari, Katsuju},
title = {A necessary condition for well-posed Cauchy problems},
journal = {J. Math. Kyoto Univ.},
volume = {16},
number = {3},
year = {1976},
pages = { 531-543},
language = {en},
url = {http://dml.mathdoc.fr/item/1250522871}
}
Igari, Katsuju. A necessary condition for well-posed Cauchy problems. J. Math. Kyoto Univ., Tome 16 (1976) no. 3, pp. 531-543. http://gdmltest.u-ga.fr/item/1250522871/