@article{EJDE_2007__2007__a255,
     author = {Zhang,  Xuemei},
     title = {Positive solutions for a class of nonresonant boundary-value problems},
     journal = {Electronic journal of differential equations},
     year = {2007},
     volume = {2007},
     zbl = {1118.34020},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2007__2007__a255/}
}