%0 Journal Article
%A L. P. Osipkov
%T Small vertical oscillations in the field of rotationally symmetric potential
%J Doklady Akademii Nauk
%D 1975
%P 309-311
%V 221
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DAN_1975_221_2_a12/
%G ru
%F DAN_1975_221_2_a12