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@article{DAN_1989_304_4_a8, author = {V. G. Romanov}, title = {Solvability of inverse problems for hyperbolic equations in a}, journal = {Doklady Akademii Nauk}, pages = {807--811}, publisher = {mathdoc}, volume = {304}, number = {4}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_4_a8/} }
V. G. Romanov. Solvability of inverse problems for hyperbolic equations in a. Doklady Akademii Nauk, Tome 304 (1989) no. 4, pp. 807-811. http://geodesic.mathdoc.fr/item/DAN_1989_304_4_a8/