%0 Journal Article %A A. Yu. Mayorov %T About destabilization of equilibrium point is caused by linear and quadratic forces of viscous friction %J Žurnal Srednevolžskogo matematičeskogo obŝestva %D 2016 %P 49-60 %V 18 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/SVMO_2016_18_3_a4/ %G ru %F SVMO_2016_18_3_a4