%0 Journal Article %A M. V. Shamolin %T Cases of integrability corresponding to the pendulum motion in four-dimensional space %J Vestnik Samarskogo universiteta. Estestvennonaučnaâ seriâ %D 2017 %P 41-58 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/VSGU_2017_1_a4/ %G ru %F VSGU_2017_1_a4