TY  - JOUR
AU  - Yan, Jurang
TI  - Comparison results for impulsive delay differential inequalities and equations.
JO  - Portugaliae mathematica
PY  - 1997
SP  - 255
EP  - 261
VL  - 54
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1997__54_3_47812/
LA  - en
ID  - PORMA_1997__54_3_47812
ER  -