TY  - JOUR
AU  - Ding, Yanhui
AU  - Chen, Min
TI  - Positive and negative solutions of impulsive functional differential equations 
JO  - Journal of nonlinear sciences and its applications
PY  - 2017
SP  - 922
EP  - 928
VL  - 10
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.22436/jnsa.010.03.05/
DO  - 10.22436/jnsa.010.03.05
LA  - en
ID  - JNSA_2017_10_3_a4
ER  -