Symmetries of Spacetimes and Riemannian ManifoldsKrishan Duggal, Ramesh Sharma · First published 1999 · Latest edition 2013Open the Tome
Lightlike Submanifolds of Semi-Riemannian Manifolds and ApplicationsKrishan L. Duggal, Aurel Bejancu · First published 1996 · Latest edition 2010Open the Tome
Foliations in Cauchy-Riemann geometrySorin Dragomir, Krishan L. Duggal · First published 2007Open the Tome
Null curves and hypersurfaces of semi-Riemannian manifoldsKrishan L. Duggal, Dae Ho Jin · First published 2007Open the Tome
Recent advances in Riemannian and Lorentzian geometriesKrishan L. Duggal · First published 2003Open the Tome
