@article{DAN_1971_200_6_a3,
     author = {A. N. Kozhevnikov},
     title = {On the asymptotics of eigenvalues and on completeness of the root vectors of an operator generated by a boundary value problem with a spectral parameter in a boundary condition},
     journal = {Doklady Akademii Nauk},
     pages = {1273--1276},
     publisher = {mathdoc},
     volume = {200},
     number = {6},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_200_6_a3/}
}