@article{DAN_1977_237_4_a1,
     author = {D. G. Vasil'ev},
     title = {On the zeros of the bending deflection function in the theory of free vibrations of shells of revolution},
     journal = {Doklady Akademii Nauk},
     pages = {764--766},
     publisher = {mathdoc},
     volume = {237},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1977_237_4_a1/}
}