@article{DAN_1963_153_2_a9,
     author = {L. A. Sakhnovich},
     title = {Some properties of the discrete spectrum of the radial {Schr\"odinger} equation},
     journal = {Doklady Akademii Nauk},
     pages = {286--289},
     publisher = {mathdoc},
     volume = {153},
     number = {2},
     year = {1963},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1963_153_2_a9/}
}