The nature of compact objects in active galatic nuclei  proceedings of the 33rd Herstmonceux Conference held in Cambridge, UK, 6-22 July 1992 
edited by A. Robinson  and R. J. Terlevich                                                
 - Cambridge  Cambridge University Press  1994 
 - xx, 435p. 
<br/><br/><label>ISBN: </label>0-521-46480-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Active Galatic Nuclei<br/>AGN
<br/><br/><label>Universal Decimal Class. No.: </label>524.6(063)  / THE