TY  - BOOK
AU  - Duggal, Krishan L
AU  - Bejancu, Aurel
TI  - Lightlike submanifolds of semi Riemannian manifolds and applications
SN  - 0-7923-3957-6
U1  - 516.362 
PY  - 1996///
CY  - Dordrecht
PB  - Kluwer Academic
KW  - Analytic geometry
KW  - Geometry
KW  - Integral geometry
KW  - Semi Riemannian manifolds
ER  -