@article{DAN_1973_212_3_a14,
     author = {A. L. Velikovich and Ya. B. Zel'dovich},
     title = {A certain approach to the solution of the inverse problem of potential theory},
     journal = {Doklady Akademii Nauk},
     pages = {580--583},
     publisher = {mathdoc},
     volume = {212},
     number = {3},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_3_a14/}
}