This document contains a history of this page, from the current version to the earliest one available.
| Version | Name | User | Date | Time | |
| current | Informationsbarriere? | m23.hfbk-hamburg.de | 19 February 2004 | 8:24 pm | |
| Informationsbarriere? | sun.hfbk.uni-hamburg.de | 1 February 2001 | 6:36 pm | ||
| Informationsbarriere? | sun.hfbk.uni-hamburg.de | 1 February 2001 | 6:36 pm | ||