%0 Journal Article %A K. Ya. Kondrat'ev %A L. S. Ivlev %A I. Galindo %T An application of the notion of the enhanced factor for studying %J Doklady Akademii Nauk %D 1995 %P 111-113 %V 345 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1995_345_1_a12/ %G ru %F DAN_1995_345_1_a12