%0 Journal Article %A G. S. Osipenko %T Structural stability and symbolic image %J Differencialʹnye uravneniâ %D 2006 %P 468-475 %V 42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2006_42_4_a5/ %G ru %F DE_2006_42_4_a5