(1992). Variability of blazars: Proceedings of a conference in honour of the 100th anniversary of the birth of Academician Yrjö Väisälä, held at Tuorla Observatory, University of Turku, Finland, January 6 - 10, 1991 (1. publ.). Cambridge Univ. Press.
Chicago-Zitierstil (17. Ausg.)Variability of Blazars: Proceedings of a Conference in Honour of the 100th Anniversary of the Birth of Academician Yrjö Väisälä, Held at Tuorla Observatory, University of Turku, Finland, January 6 - 10, 1991. 1. publ. Cambridge u.a: Cambridge Univ. Press, 1992.
MLA-Zitierstil (9. Ausg.)Variability of Blazars: Proceedings of a Conference in Honour of the 100th Anniversary of the Birth of Academician Yrjö Väisälä, Held at Tuorla Observatory, University of Turku, Finland, January 6 - 10, 1991. 1. publ. Cambridge Univ. Press, 1992.