TY  - JOUR
AU  - Xu, Zhiting
TI  - Averaging technique and oscillation for even order damped delay differential equations.
JO  - Portugaliae mathematica
PY  - 2006
SP  - 23
EP  - 36
VL  - 63
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_2006__63_1_52936/
LA  - en
ID  - PORMA_2006__63_1_52936
ER  -