| September 6, 2023 | Edited by Tom Morris | merge authors |
| September 30, 2020 | Edited by MARC Bot | add ISNI |
| March 31, 2017 | Edited by MARC Bot | add VIAF and wikidata ID |
| April 14, 2011 | Edited by Budelberger | merge authors |
| April 14, 2011 | Edited by Budelberger | Add external link. |