@article{DAN_1973_208_1_a8,
     author = {M. Meredov},
     title = {On the first boundary-value problem for higher-order hyperbolic equations},
     journal = {Doklady Akademii Nauk},
     pages = {39--42},
     publisher = {mathdoc},
     volume = {208},
     number = {1},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_208_1_a8/}
}