@article{01154627,
title = {On the boundary value problem in a dihedral angle for normally hyperbolic systems of first order.},
journal = {Georgian Mathematical Journal},
volume = {5},
year = {1998},
pages = {121-138},
doi = {10.1007/BF02767992},
zbl = {0902.35067},
language = {en},
url = {http://dml.mathdoc.fr/item/01154627}
}
Jokhadze, O. On the boundary value problem in a dihedral angle for normally hyperbolic systems of first order.. Georgian Mathematical Journal, Tome 5 (1998) pp. 121-138. doi : 10.1007/BF02767992. http://gdmltest.u-ga.fr/item/01154627/