at RAI Amsterdam on 24 Jun 2015 – 27 Jun 2015

at Hotel Ter Elst on 23 Jan 2014 – 25 Jan 2014

at Amsterdam RAI on 5 Jun 2013 – 8 Jun 2013

at Amsterdam RAI on 5 Jun 2013 – 8 Jun 2013

at Maritim ProArte, Berlin on 1 Jun 2013 – 5 Jun 2013

at Amsterdam RAI on 5 Jun 2012 – 9 Jun 2012

at Maritim proArte Hotel on 28 May 2011 – 1 Jun 2011

at Amsterdam RAI on 18 May 2011 – 21 May 2011

at Hilton Montreal Bonaventure on 7 Mar 2011 – 12 Mar 2011

at Amsterdam on 9 Jun 2010 – 12 Jun 2010

at Hotel Europa Salzburg on 30 Apr 2010 – 2 May 2010

at Kongresszentrum, Karlsruhe on 16 Nov 2009 – 18 Nov 2009

at Congress Center, Karlsruhe on 15 Nov 2009 – 18 Nov 2009