@article{DAN_1984_278_5_a14,
     author = {A. S. Silbergleit and Ju. I. Kopilevich},
     title = {A property of a quadratic operator pencil determining the normal modes of an elastic cylinder with a free surface},
     journal = {Doklady Akademii Nauk},
     pages = {1086--1089},
     publisher = {mathdoc},
     volume = {278},
     number = {5},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_278_5_a14/}
}