%0 Journal Article %A A. V. Lipnitskii %T On the measure of the irregularity sets of linear systems %J Differencialʹnye uravneniâ %D 1998 %P 211-215 %V 34 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_2_a9/ %G ru %F DE_1998_34_2_a9