TY  - JOUR
AU  - G. N. Petrovskiǐ
TI  - A property of matrix exponentials
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 954
EP  - 955
VL  - 13
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_5_a20/
LA  - ru
ID  - DE_1977_13_5_a20
ER  -