Ludvigsen, M.  . <br/><br/>
General relativity a geometric approach /  
by Malcolm Ludvingsen. 
 - Cambridge :   Cambridge University Press ,   1999 
 - 217p ;  
<br/><br/><label>ISBN: </label>0-521-63976-X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Space and time
<br/><br/><label>Dewey Class. No.: </label>CN  / N9;1