%0 Journal Article %A V. A. Tabueva %T A qualitative investigation of a certain differential equation of the second order in control theory %J Differencialʹnye uravneniâ %D 1965 %P 1557-1567 %V 1 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1965_1_12_a1/ %G ru %F DE_1965_1_12_a1