@article{MZM_1978_24_3_a7,
     author = {V. G. Romanov},
     title = {Uniqueness of the solution of an inverse problem for first-order hyperbolic systems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {359--365},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1978_24_3_a7/}
}