| Date | Description |
|---|---|
| 2015-05-02 | update person_description Dr. Michael Hamacher => Dr. Michael Hamacher |
| 2014-01-26 | delete ceo Dr. Manfred Rüdiger |
| 2014-01-26 | insert ceo Dr. Michael Hamacher |
| 2014-01-26 | delete person Dr. Manfred Rüdiger |
| 2014-01-26 | insert person Dr. Michael Hamacher |
| 2013-04-07 | delete person Michael Bös |