| Titel | ISBN-13 (ISBN-10) | Erschei- nungsjahr | andere Autoren |
|---|---|---|---|
| Quasars, Agns and Related Research Across 2000: Conference On The Occasion Of L. Woltjer's 70Th Birthday Held At The Accademia Nazionale Dei Lincei, . . . 3-5 May 2000 | 978-3-662-30801-1 (3-662-30801-0) | 2013 | Giancarlo Setti |
| Quasars, AGNs and Related Research Across 2000: Conference on the Occasion of L. Woltjer's 70th Birthday Held at the Accademia Nazionale dei Lincei, ... 3-5 May 2000 | 978-3-540-42191-7 (3-540-42191-2) | 2001 | G. Setti |