ISBN 9783662138250 books & textbook
Variability of Active Galaxies: Proceedings of a Workshop of the Sonderforschungsbereich 328 Held at Heidelberg, Germany, 3–5 September 1990 (Lecture Notes in Physics)
Duschl, Wolfgang J. Wagner, Stefan J. Camenzind, Max
Springer /2014-04-17 Paperback / 328 Pages
isbn-10: 3662138255 / isbn-13: 9783662138250
