@article{DAN_1971_199_3_a8,
     author = {D. Sh. Mogilevskii},
     title = {On the analytical nature of the {Green} function of the mixed problem for a hyperbolic equation},
     journal = {Doklady Akademii Nauk},
     pages = {540--543},
     publisher = {mathdoc},
     volume = {199},
     number = {3},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_3_a8/}
}