@article{GMJ_1994__1_2_47217,
     author = {Kharibegashvili, S.},
     title = {On the correct formulation of a multidimensional problem for strictly hyperbolic equations of higher order.},
     journal = {Georgian Mathematical Journal},
     pages = {141--150},
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1994},
     zbl = {0819.35091},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/GMJ_1994__1_2_47217/}
}