Peterson, Bradley M. <br/><br/>
An introduction to active galactic nuclei 

 - Cambridge:  Cambridge University Press  1997 
 - xvi, 238p. :   il; 23 cm. 
<br/><br/><label>ISBN: </label>0-521-47911-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astrofísica