@article{DE_1998_34_8_a5,
     author = {N. A. Izobov and S. G. Krasovskii},
     title = {On the existence of a linear singular system with an exponential characteristic set of unbounded measure},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1049--1055},
     publisher = {mathdoc},
     volume = {34},
     number = {8},
     year = {1998},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1998_34_8_a5/}
}