@article{DE_1973_9_9_a12,
     author = {S. Elubaev},
     title = {A uniqueness theorem for a certain inverse problem for a system of hyperbolic equations of order~$n$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1673--1682},
     publisher = {mathdoc},
     volume = {9},
     number = {9},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_9_a12/}
}