@article{DAN_1957_114_2_a3,
     author = {A. G. Kostyuchenko},
     title = {On the behaviour of the eigenfunctions of the selfadjoint operators},
     journal = {Doklady Akademii Nauk},
     pages = {249--251},
     publisher = {mathdoc},
     volume = {114},
     number = {2},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_114_2_a3/}
}