TY  - JOUR
AU  - I. V. Gaishun
TI  - Observable Linear Nonstationary Systems of Total Differential Equations
JO  - Differencialʹnye uravneniâ
PY  - 2003
SP  - 1299
EP  - 1306
VL  - 39
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2003_39_10_a0/
LA  - ru
ID  - DE_2003_39_10_a0
ER  -