%0 Journal Article %A L. S. Tchebykin %T The stability of a certain nonlinear third order system %J Differencialʹnye uravneniâ %D 1973 %P 1151-1153 %V 9 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1973_9_6_a21/ %G ru %F DE_1973_9_6_a21