@article{1195518512,
author = {Hasegawa, Yukiko},
title = {On the $C^\infty$-Goursat problem for $2$nd order equations with real constant coefficients},
journal = {Proc. Japan Acad.},
volume = {51},
number = {10},
year = {1975},
pages = { 516-519},
language = {en},
url = {http://dml.mathdoc.fr/item/1195518512}
}
Hasegawa, Yukiko. On the $C^\infty$-Goursat problem for $2$nd order equations with real constant coefficients. Proc. Japan Acad., Tome 51 (1975) no. 10, pp. 516-519. http://gdmltest.u-ga.fr/item/1195518512/