@article{DAN_1968_181_4_a7,
     author = {A. B. Nersesyan},
     title = {The {Cauchy} problem for a second order hyperbolic equation which is degenerate on the initial hyperplane},
     journal = {Doklady Akademii Nauk},
     pages = {798--801},
     publisher = {mathdoc},
     volume = {181},
     number = {4},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1968_181_4_a7/}
}