@article{ARM_2002__38_4_a4,
     author = {Papageorgiou, Nikolaos S. and Papalini, Francesca},
     title = {Existence of two solutions for quasilinear periodic differential equations with discontinuities},
     journal = {Archivum mathematicum},
     pages = {285--296},
     publisher = {mathdoc},
     volume = {38},
     number = {4},
     year = {2002},
     mrnumber = {1942658},
     zbl = {1090.34013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_2002__38_4_a4/}
}