Kupeli, D.N., <br/><br/>
Singular Semi-Riemannian Geometry : 

 -  Springer,  1996. 
 - 200 pages 
<br/><br/><label>ISBN: </label>9780792339960 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>Dewey Class. No.: </label>516.373  / KUP