@article{DAN_1962_145_3_a11,
     author = {Z. I. Leibenzon},
     title = {The relation between the inverse problem and the completeness of eigenfunctions},
     journal = {Doklady Akademii Nauk},
     pages = {519--522},
     publisher = {mathdoc},
     volume = {145},
     number = {3},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_3_a11/}
}