STEPHANI, Hans. <br/><br/>
General Relativity : An introduction to the theory of the gravitational field 

 - London  Cambridge University Press.  1982 
 - xvi, 298p. 
<br/><br/><label>ISBN: </label>0 521 24008 5 
<br/><br/><label>Dewey Class. No.: </label>530.11