%0 Journal Article %A G. I. Gurevich %T Theory of small amplitude vibrations %J Doklady Akademii Nauk %D 1961 %P 1313-1316 %V 138 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_138_6_a16/ %G ru %F DAN_1961_138_6_a16