This document contains a history of this page, from the current version to the earliest one available.
| Version | Name | User | Date | Time | |
| current | leer #4 | max2-086.dialin.uni-hamburg.de | 21 June 2002 | 1:55 pm | |
| http://www.ariada.uea.ac.uk/Ariada1/phil_duet.html | max2-086.dialin.uni-hamburg.de | 21 June 2002 | 1:55 pm | ||
| http://www.ariada.uea.ac.uk/Ariada1/phil_duet.html | a-tn6-40.tin.it | 2 May 2001 | 12:39 am | ||