@article{EJDE_2010__2010__a112,
     author = {Ji,  Caisheng and Yan,  Baoqiang},
     title = {Positive solutions for second-order singular three-point boundary-value problems with sign-changing nonlinearities},
     journal = {Electronic journal of differential equations},
     year = {2010},
     volume = {2010},
     zbl = {1201.34031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2010__2010__a112/}
}