TY  - JOUR
AU  - P. P. Zabreiko
AU  - Nguen Van Min
TI  - The group of characteristic operators and its applications in the theory of linear ordinary differential equations
JO  - Doklady Akademii Nauk
PY  - 1992
SP  - 24
EP  - 28
VL  - 324
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1992_324_1_a3/
LA  - ru
ID  - DAN_1992_324_1_a3
ER  -