@article{DAN_1984_277_4_a4,
     author = {S. I. Kabanikhin},
     title = {The solvability of inverse problems for differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {788--791},
     year = {1984},
     volume = {277},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_277_4_a4/}
}