@article{DAN_1987_292_3_a4,
     author = {S. I. Kabanikhin},
     title = {Regularization of multidimensional inverse problems for hyperbolic},
     journal = {Doklady Akademii Nauk},
     pages = {534--537},
     publisher = {mathdoc},
     volume = {292},
     number = {3},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1987_292_3_a4/}
}