@article{00845471,
title = {On the solvability of a Darboux type non-characteristic spatial problem for the wave equation.},
journal = {Georgian Mathematical Journal},
volume = {3},
year = {1996},
pages = {53-68},
doi = {10.1007/BF02256798},
zbl = {0844.35062},
language = {en},
url = {http://dml.mathdoc.fr/item/00845471}
}
Kharibegashvili, S. On the solvability of a Darboux type non-characteristic spatial problem for the wave equation.. Georgian Mathematical Journal, Tome 3 (1996) pp. 53-68. doi : 10.1007/BF02256798. http://gdmltest.u-ga.fr/item/00845471/