* IMRET 1,  Frankfurt, Germany, February 1997
* IMRET 2,  New Orleans, United States, March 1998
* IMRET 3, Frankfurt, Germany, April 1999
* IMRET 4, Atlanta, United States, March 2000
* IMRET 5,  Strasbourg, France, May 2001
* IMRET 6, New Orleans, United States, March 2002
* IMRET 7,  Lausanne, Switzerland, September 2003
* IMRET 8,  Atlanta, United States, April 2005
* IMRET 9, Potsdam, Germany, September 2006
* IMRET 10,  New Orleans, United States, April 2008
* IMRET 11,  Kyoto, Japan, March 2010
* IMRET 12,  Lyon, France, February 2012
* IMRET 13,  Budapest, Hungary, June 2014
* IMRET 14,  Beijing, China, September 2016
* IMRET 15,  Karlsruhe, Germany, October 2018