General relativity :  an Einstein centenary survey / 
edited by S. W. Hawking and W. Israel. 
 - London:  Cambridge University Press,  1979. 
 - xviii, 919 p. :  ill. 
<br/><br/><label>ISBN: </label>0521222850 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General relativity (Physics).<br/>Relativity (Physics)