%0 Journal Article %A R. Kayumov %T Some properties of information sets of nonlinear systems %J Differencialʹnye uravneniâ %D 1986 %P 710-712 %V 22 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_4_a21/ %G ru %F DE_1986_22_4_a21