@article{00794336, title = {On the solvability of a spatial problem of Darboux type for the wave equation.}, journal = {Georgian Mathematical Journal}, volume = {2}, year = {1995}, pages = {385-394}, doi = {10.1007/BF02255987}, zbl = {0842.35052}, language = {en}, url = {http://dml.mathdoc.fr/item/00794336} }
Kharibegashvili, S. On the solvability of a spatial problem of Darboux type for the wave equation.. Georgian Mathematical Journal, Tome 2 (1995) pp. 385-394. doi : 10.1007/BF02255987. http://gdmltest.u-ga.fr/item/00794336/