@article{00806190,
title = {On a Darboux problem for a third-order hyperbolic equation with multiple characteristics.},
journal = {Georgian Mathematical Journal},
volume = {2},
year = {1995},
pages = {469-490},
doi = {10.1007/BF02259669},
zbl = {0833.35084},
language = {en},
url = {http://dml.mathdoc.fr/item/00806190}
}
Jokhadze, O. On a Darboux problem for a third-order hyperbolic equation with multiple characteristics.. Georgian Mathematical Journal, Tome 2 (1995) pp. 469-490. doi : 10.1007/BF02259669. http://gdmltest.u-ga.fr/item/00806190/