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

at PHPPro on 21 Feb 2011

at Amsterdam on 9 Jun 2010 – 12 Jun 2010

at Best Western Hotel Ter Elst, Antwerp, Belgium on 29 Jan 2010 – 30 Jan 2010

at Amsterdam, The Netherlands on 11 Jun 2009 – 13 Jun 2009