%0 Journal Article %A Yu. F. Shain %T Investigation of the motions of a spherical pendulum in the presence of a switching rotating force %J Differencialʹnye uravneniâ %D 1968 %P 215-224 %V 4 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_2_a1/ %G ru %F DE_1968_4_2_a1