@article{GMJ_1998__5_4_48151,
     author = {Kharibegashvili, S.},
     title = {On some boundary value problems for an ultrahyperbolic equation.},
     journal = {Georgian mathematical journal},
     pages = {341--360},
     year = {1998},
     volume = {5},
     number = {4},
     zbl = {0914.35073},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1998__5_4_48151/}
}