%0 Journal Article %A T. Gichev %A R. Angelova %T Quasilinear Instantaneous Processes Described by Ordinary Differential Equations %J Differencialʹnye uravneniâ %D 2005 %P 306-311 %V 41 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2005_41_3_a2/ %G ru %F DE_2005_41_3_a2