Dray, Tevian <br/><br/>
Differential Forms and the Geometry of General Relativity/ 
Tevian Dray. 
 - New York:  CRC Press,  c2015. 
 - xxv, 295p. 
<br/><br/><label>ISBN: </label>9781466510005 
<br/><br/><label>Dewey Class. No.: </label>530.1101   / DRA/D