%0 Journal Article %A Yu. K. Sirenko %A V. P. Shestopalov %T On the existence of free quasistationary oscillations of an %J Doklady Akademii Nauk %D 1987 %P 87-90 %V 293 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1987_293_1_a19/ %G ru %F DAN_1987_293_1_a19