TY  - JOUR
AU  - Lakrib,  Mustapha
AU  - Sari,  Tewfik
TI  - Time averaging for ordinary differential equations and retarded functional differential equations
JO  - Electronic journal of differential equations
PY  - 2010
VL  - 2010
UR  - http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a18/
LA  - en
ID  - EJDE_2010__2010__a18
ER  -