TY  - JOUR
AU  - V. D. Nguyên
TI  - Vibrations of nonautonomous systems with resonance, in the singular case
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 1233
EP  - 1240
VL  - 4
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_7_a6/
LA  - ru
ID  - DE_1968_4_7_a6
ER  -