@article{DE_1968_4_1_a7,
     author = {V. G. Romanov},
     title = {A one-dimensional inverse problem for the telegraph equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {87--101},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_1_a7/}
}