@article{1200692697,
author = {Ikawa, Mitsuru},
title = {On the mixed problem for hyperbolic equations of second order with the Neumann boundary condition},
journal = {Osaka J. Math.},
volume = {7},
number = {1},
year = {1970},
pages = { 203-223},
language = {en},
url = {http://dml.mathdoc.fr/item/1200692697}
}
Ikawa, Mitsuru. On the mixed problem for hyperbolic equations of second order with the Neumann boundary condition. Osaka J. Math., Tome 7 (1970) no. 1, pp. 203-223. http://gdmltest.u-ga.fr/item/1200692697/