@article{1250522967,
author = {Ibuki, Kazuhiko},
title = {On the regularity of solutions of a mixed problem for hyperbolic equations of second order in a domain with corners},
journal = {J. Math. Kyoto Univ.},
volume = {16},
number = {3},
year = {1976},
pages = { 167-183},
language = {en},
url = {http://dml.mathdoc.fr/item/1250522967}
}
Ibuki, Kazuhiko. On the regularity of solutions of a mixed problem for hyperbolic equations of second order in a domain with corners. J. Math. Kyoto Univ., Tome 16 (1976) no. 3, pp. 167-183. http://gdmltest.u-ga.fr/item/1250522967/