July 2002 The picture was taken on 2002-07-02 on the roof of the Electrotechnical Institute of the Technical University of Vienna.
June 1999 The picture was taken on 1999-06-11 on the roof of the Electrotechnical Institute of the Technical University of Vienna.
October 1997 The picture was taken on the roof of the Electrotechnical Institute of the Technical University of Vienna.