@article{DAN_1961_138_5_a13,
     author = {V. B. Uvarov},
     title = {The relationship between two spectral functions corresponding to a second-order differential equation with different initial conditions},
     journal = {Doklady Akademii Nauk},
     pages = {1035--1038},
     publisher = {mathdoc},
     volume = {138},
     number = {5},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_5_a13/}
}