@article{EJDE_2012__2012__a32,
     author = {Jia,  Mei and Wang,  Pingyou},
     title = {Multiple positive solutions for integro-differential equations with integral boundary conditions and sign changing nonlinearities},
     journal = {Electronic journal of differential equations},
     year = {2012},
     volume = {2012},
     zbl = {1243.45017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2012__2012__a32/}
}