Dergiler / International Electronic Journal of Geometry / 2015 / Cilt: 8 - Sayı: 2LIGHTLIKE HYPERSURFACES WITH PARALLEL SCREEN SHAPE OPERATORMahamane Mahi HAROUNA, Cyriaque ATINDOGBE, Joel TOSSADergiInternational Electronic Journal of GeometrySayı2015 · Cilt: 8 - Sayı: 2Sayfa57–69DOI—