@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},
     publisher = {mathdoc},
     volume = {2015},
     year = {2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a64/}
}