%0 Journal Article %A A. M. Fridman %A I. G. Shuhman %T Collective oscillations of a spherically symmetric system of rotating masses %J Doklady Akademii Nauk %D 1972 %P 67-70 %V 202 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1972_202_1_a18/ %G ru %F DAN_1972_202_1_a18