Duggal Krishan L Et Al <br/><br/>
Null Curves and Hypersurfaces of Semi-Riemannian Manifolds 

 -  World Scientific  WSPC  2007 
<br/><br/><label>ISBN: </label>9789812779663 
<br/><br/><label>Source: </label>EBOOK 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics