Wuhan, China, 2015
Stony Brook University, USA,2014
Bern University, Switzerland, 2013
Washington DC, USA, 2012
San Carlos, Mexico, 2011
Bad Honnef, Germany, 2010
Seoul, Korea, 2009
Raleigh, USA, 2008
Roma, Italy, 2007
Brookhaven, USA, 2006
Swansea, UK, 2005
Argonne, USA, 2004
Nara, Japan, 2003