%0 Journal Article
%A Zhang,  Shuqin
%T Positive solutions for boundary-value problems of nonlinear fractional differential equations
%J Electronic journal of differential equations
%D 2006
%V 2006
%U http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a164/
%G en
%F EJDE_2006__2006__a164