at Addison Conference Center on 29 Jun 2012 – 30 Jun 2012

at Wilhelm-Kempf-Haus, Wiesbaden Naurod, Germany on 30 May 2010 – 1 Jun 2010

at Chicago, IL on 20 May 2009 – 22 May 2009

at Baltimore, MD on 16 May 2009 – 16 May 2009