@article{MZM_1990_47_2_a18,
     author = {A. V. Baev},
     title = {Uniqueness of a~solution of an inverse problem for an equation in acoustics, and an inverse spectral problem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {149--151},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_2_a18/}
}