@article{DAN_1962_146_6_a3,
     author = {N. V. Kuznetsov},
     title = {A generalization of a theorem stated by {V.\,A.~Ambartsumyan}},
     journal = {Doklady Akademii Nauk},
     pages = {1259--1262},
     publisher = {mathdoc},
     volume = {146},
     number = {6},
     year = {1962},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1962_146_6_a3/}
}