@article{EJDE_2011__2011__a22,
     author = {Yang,  Aijun and Sun,  Bo and Ge,  Weigao},
     title = {Existence of positive solutions for self-adjoint boundary-value problems with integral boundary conditions at resonance},
     journal = {Electronic journal of differential equations},
     year = {2011},
     volume = {2011},
     zbl = {1211.34031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2011__2011__a22/}
}