@article{ZVMMF_1991_31_8_a5,
     author = {I. P. Borovikov},
     title = {The uniqueness of the solution of an inverse problem for the wave equation},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1186--1191},
     publisher = {mathdoc},
     volume = {31},
     number = {8},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1991_31_8_a5/}
}