%0 Journal Article %A V. S. Kozlova %T Rough singular points situated on the line of discontinuity of the right- hand sides of systems of differential equations %J Differencialʹnye uravneniâ %D 1984 %P 1998-1999 %V 20 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_11_a23/ %G ru %F DE_1984_20_11_a23