Bulletin of the Malaysian Mathematical Sciences Society, cilt.31, sa.2, ss.209-215, 2008 (Scopus)
In the present study, we calculate the coefficients of the second fundamental form and curvature ellipse of Chen surfaces in E4. Further, we give the necessary and sufficent condition for the origin of NpM to lie on the curvature ellipse of Vranceanu surfaces, which are special type of Chen surfaces.