TURKISH JOURNAL OF MATHEMATICS, cilt.38, sa.4, ss.764-777, 2014 (SCI-Expanded)
We investigate half-lightlike submanifolds with planar normal sections of 4-dimensional pseudo-Euclidean space. We obtain necessary and sufficient conditions for a half-lightlike submanifold of R-2(4) such that it has degenerate or nondegenerate planar normal sections.