@article{DAN_1964_158_3_a10,
     author = {M. V. Fedoryuk},
     title = {The asymptotic behavior of the discrete spectrum of the operator $-w''(x)+\lambda^2p(x)w(x)$},
     journal = {Doklady Akademii Nauk},
     pages = {540--542},
     publisher = {mathdoc},
     volume = {158},
     number = {3},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_158_3_a10/}
}