Variablity of active galaxies  proceedings of a workshop of the Sonderforschungsbereich held in Heidelberg, Germany, 3-5 September 1990 
edited by W. J. Duschl, S. J. Wagner and M. Camenzind                                                   
 - Berlin  Springer-Verlag  1991 
 - xii, 312p. 
 - Lecture notes in physics; v. 377 .
<br/><br/><label>ISBN: </label>3-540-53860-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Active galactic nuclei<br/>Active galaxies<br/>Astronomy and astrophysics thesaurus<br/>Compact galaxies
<br/><br/><label>Universal Decimal Class. No.: </label>524.74(082.1)  / VAR