| January 28, 2022 | Edited by Gustav-Landauer-Bibliothek Witten | merge authors |
| August 30, 2008 | Edited by RenameBot | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |
| January 28, 2022 | Edited by Gustav-Landauer-Bibliothek Witten | merge authors |
| August 30, 2008 | Edited by RenameBot | fix author name |
| April 1, 2008 | Created by an anonymous user | initial import |