TY  - JOUR
AU  - E. K. Makarov
TI  - On the critical parameter value for the higher sigma-exponent of linear differential systems
JO  - Differencialʹnye uravneniâ
PY  - 2006
SP  - 844
EP  - 846
VL  - 42
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2006_42_6_a13/
LA  - ru
ID  - DE_2006_42_6_a13
ER  -