TY  - JOUR
AU  - Chen, Yi
AU  - Lv, Zhanmei
TI  - Positive solutions for fractional differential equations with variable coefficients
JO  - Electronic Journal of Differential Equations
PY  - 2012
VL  - 2012
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a59/
LA  - en
ID  - EJDE_2012__2012__a59
ER  -