%0 Journal Article %A Yu. V. Malyshev %T Qualitative investigation of critical cases of stability of motion %J Differencialʹnye uravneniâ %D 1984 %P 1715-1720 %V 20 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_10_a7/ %G ru %F DE_1984_20_10_a7