TY  - JOUR
AU  - V. A. Weber
TI  - The stability in the critical case of several pairs of pure imaginary roots for systems with aftereffect
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1614
EP  - 1625
VL  - 5
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_9_a7/
LA  - ru
ID  - DE_1969_5_9_a7
ER  -