@article{GMJ_1999__6_5_48453,
     author = {Kiguradze, T.},
     title = {On the correctness of the {Dirichlet} problem in a characteristic rectangle for fourth order linear hyperbolic equations.},
     journal = {Georgian mathematical journal},
     pages = {447--470},
     year = {1999},
     volume = {6},
     number = {5},
     zbl = {0939.35113},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1999__6_5_48453/}
}