@article{TM_1971_115_a4,
     author = {A. S. Blagoveshchenskii},
     title = {The inverse boundary value problem of the theory of wave propagation in an anisotropic medium},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {39--56},
     publisher = {mathdoc},
     volume = {115},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1971_115_a4/}
}