@article{SJIM_2011_14_1_a2,
     author = {Yu. E. Anikonov and M. V. Neshchadim},
     title = {On analytical methods in the theory of inverse problems for hyperbolic {equations.~I}},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {27--39},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2011_14_1_a2/}
}