@article{01246364,
title = {On the existence of a measure unbounded exponential spectral characteristic set of a linear system with a small parameter at the derivative.},
journal = {Memoirs on Differential Equations and Mathematical Physics},
volume = {15},
year = {1998},
pages = {140-144},
zbl = {0919.34050},
language = {en},
url = {http://dml.mathdoc.fr/item/01246364}
}
Izobov, N.; Krasovskij, S. On the existence of a measure unbounded exponential spectral characteristic set of a linear system with a small parameter at the derivative.. Memoirs on Differential Equations and Mathematical Physics, Tome 15 (1998) pp. 140-144. http://gdmltest.u-ga.fr/item/01246364/