%0 Journal Article %A E. N. Pivovarova %T Stability analysis of steady motions of a spherical robot of combined type %J Russian journal of nonlinear dynamics %D 2017 %P 611-623 %V 13 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/ND_2017_13_4_a12/ %G ru %F ND_2017_13_4_a12