TY  - JOUR
AU  - Elabbasy, El M.
AU  - Hegazi, A.S.
AU  - Saker, S.H.
TI  - Oscillation of solutions to delay differential equations with positiv and negative coefficients
JO  - Electronic Journal of Differential Equations
PY  - 2000
VL  - 2000
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2000__2000__a54/
LA  - en
ID  - EJDE_2000__2000__a54
ER  -