%0 Journal Article %A N. A. Izobov %A S. G. Krasovskii %T On the existence of a linear singular system with an exponential characteristic set of unbounded measure %J Differencialʹnye uravneniâ %D 1998 %P 1049-1055 %V 34 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1998_34_8_a5/ %G ru %F DE_1998_34_8_a5