@article{DE_1979_15_1_a7,
     author = {S. I. Kabanikhin},
     title = {Application of energy inequalities to an inverse problem for a hyperbolic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {61--67},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_1_a7/}
}