%0 Journal Article %T Seminar on Problems of Nonlinear Dynamics and Control at Moscow State University %J Differencialʹnye uravneniâ %D 2001 %P 134-138 %V 37 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2001_37_1_a20/ %G ru %F DE_2001_37_1_a20