TY  - JOUR
AU  - V. M. Millionshchikov
TI  - A~criterion for a small change in the direction of the solutions of a~linear system of differential equations as the result of small disturbances in the coefficients of the system
JO  - Matematičeskie zametki
PY  - 1968
SP  - 173
EP  - 180
VL  - 4
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1968_4_2_a8/
LA  - ru
ID  - MZM_1968_4_2_a8
ER  -