%0 Journal Article %A D. G. Vasil'ev %T On the zeros of the bending deflection function in the theory of free vibrations of shells of revolution %J Doklady Akademii Nauk %D 1977 %P 764-766 %V 237 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1977_237_4_a1/ %G ru %F DAN_1977_237_4_a1