Dear Toni Greil,
>> are there any of you living/working in Muenchen (Germany) ?
>> I'd like to get an impression, what you undertake with GAP.
sending a message containing a single line "review gap-forum" to
"listserv@samson.math.rwth-aachen.de" will return a list of all
subscribers of the gap-forum. Maybe you find someone from Muenchen
in this list.
best wishes
Frank Celler