Dergiler / International Electronic Journal of Geometry / 2009 / Cilt: 2 - Sayı: 2Two Dimensional null scrolls in R^n_1 and Massey's TheoremHandan ÖZTEKİN, Mahmut ERGÜTDergiInternational Electronic Journal of GeometrySayı2009 · Cilt: 2 - Sayı: 2Sayfa58–62DOI—