@article{EJDE_2015__2015__a64,
     author = {Raposo,  Carlos and Pereira,  Ducival and Araujo,  Geraldo and Baena,  Antonio},
     title = {Unilateral problems for the {Klein-Gordon} operator with nonlinearity of {Kirchhoff-Carrier} type},
     journal = {Electronic journal of differential equations},
     year = {2015},
     volume = {2015},
     zbl = {1329.35216},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a64/}
}