@article{EJDE_2009__2009__a161,
     author = {Xu,  Jiafa and Yang,  Zhilin},
     title = {Three positive solutions for a system of singular generalized {Lidstone} problems},
     journal = {Electronic journal of differential equations},
     year = {2009},
     volume = {2009},
     zbl = {1188.34034},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a161/}
}