%0 Journal Article %A A. V. Borisov %A P. E. Ryabov %A S. V. Sokolov %T On the existence of focus singularities in one model of a Lagrange top with a vibrating suspension point %J Doklady Rossijskoj akademii nauk. Matematika, informatika, processy upravleniâ %D 2020 %P 26-30 %V 495 %U http://geodesic.mathdoc.fr/item/DANMA_2020_495_a5/ %G ru %F DANMA_2020_495_a5