TY  - JOUR
AU  - Vojin S. Drenovac
TI  - The normal vibration modes of some nonlinear systems
JO  - Theoretical and applied mechanics
PY  - 1982
SP  - 21 
VL  - 8
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TAM_1982_8_1_a2/
LA  - en
ID  - TAM_1982_8_1_a2
ER  -