@article{EJDE_2002__2002__a192,
     author = {Carl,  Siegfried and Heikkil\"a,  Seppo},
     title = {Existence of solutions for discontinuous functional equations and elliptic boundary-value problems},
     journal = {Electronic journal of differential equations},
     year = {2002},
     volume = {2002},
     zbl = {1001.35044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a192/}
}