TY - DATA AU - Krishan L. Duggal, Aurel Bejancu TI - Lightlike Submanifolds of Semi-Riemannian Manifolds and Applications SN - 9789401720892 PY - 1996/// PB - Springer Netherlands KW - Mathematics and Statistics UR - https://doi.org/10.1007/978-94-017-2089-2 ER -