BALKAN JOURNAL OF GEOMETRY AND ITS APPLICATIONS, cilt.11, sa.2, ss.61-72, 2006 (SCI-Expanded)
The purpose of this article is to classify 3-dimensional null 2-type space-like submanifolds of the pseudo-Euclidean space E-t(5) which are constructed from the eigenfunctions of the Laplacian with two eigenvalues 0 and nonzero constant lambda, under certain assumptions.