@article{DAN_1973_210_5_a2,
     author = {V. P. Didenko},
     title = {On problems of {Cauchy-Goursat} type for a multidimensional hyperbolic equation with a degeneracy},
     journal = {Doklady Akademii Nauk},
     pages = {1008--1010},
     publisher = {mathdoc},
     volume = {210},
     number = {5},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_210_5_a2/}
}