%0 Journal Article %A A. V. Arutyunov %A V. N. Rozova %T Regular zeros of a quadratic mapping and local controllability of nonlinear systems %J Differencialʹnye uravneniâ %D 1999 %P 723-728 %V 35 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1999_35_6_a0/ %G ru %F DE_1999_35_6_a0