@article{EJDE_2013__2013__a43,
     author = {Sang,  Yanbin},
     title = {Existence and uniqueness of fixed points for mixed monotone operators with perturbations},
     journal = {Electronic journal of differential equations},
     year = {2013},
     volume = {2013},
     zbl = {1302.47078},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2013__2013__a43/}
}