Stephani, Hans. <br/><br/>
Relativity :  an introduction to special and general relativity / 
Hans Stephani. 
 - 3rd ed. 
 - New York :  Cambridge University Press,  2004. 
 - xx, 396 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0521010691 (pbk .) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gravitational fields.<br/>General relativity (Physics)