@article{DAN_1971_196_5_a11,
     author = {A. G. Aslanyan and V. B. Lidskii},
     title = {An oscillation theorem in the theory of vibrations of thin shells of revolution},
     journal = {Doklady Akademii Nauk},
     pages = {1040--1042},
     publisher = {mathdoc},
     volume = {196},
     number = {5},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1971_196_5_a11/}
}