20-22 July 2007, Padova (Italy) 10-12 November 2006, Rio De Janeiro (Brasil) 22-24 September 2006, Oakland (USA) 15-17 September 2006, Chicago (USA) 01-02 July 2006, Winterthur (Switzerland) 01-02 October 2005, Mexico City (Mexico) 01-03 July 2005, Winterthur (Switzerland) 06-08 May 2005, Zagreb (Croatia) 09-10 April 2005, Lyon (France) 08-09 May 2004, Wiesbaden (Germany) 22-24 August 2003, Almere (Netherlands) 16-18 August 2002, Almere (Netherlands)