Visiting positions
- August 2022 Weizmann Institute of Science, Rehovot, Israel
- June 2022 Universität Göttingen, Germany
- Sept. 2014 - June 2015 University of California, San Diego, USA
- May 2014 Universität Münster, Germany
- Oct. 2012 - Feb. 2013 Uniwersytet Warszawski (Warsaw University), Poland
- Sept. 2012 Universität Göttingen, Germany
- June 2012 Hebrew University, Jerusalem, Israel
- June 2012 Weizmann Institute of Science, Rehovot, Israel
- Dec. 2010 - June 2011 University of California, San Diego, USA
- Sept. 2010 Universität Münster, Germany
- April - May 2010 Max Planck Institute, Bonn, Germany
- Feb. 2010 Cambridge University, England
- Sept. 2009 Universität Münster, Germany
- Feb. - March, Sept. 2006 Max Planck Institute, Bonn, Germany
- Sept. 2005 Université de Lausanne, Switzerland
- Feb. - May 2004 Max Planck Institute, Bonn, Germany
- March - June 2003 Ohio State University, Columbus, OH. USA
- Aug. 2002 Newton Institut, Cambridge University, England
- July 2001 CRM Barcelona, Spain
- Feb. 2001 Max Planck Institute, Bonn, Germany
- Dec. 1999 Universität Bielefeld, Germany
- Aug. 1999 ICTP, Trieste, Italy
- Dec. 1997 Universität Bielefeld, Germany
- Jan. 1997 Université de Lausanne, Switzerland
- Jan. 1995 Université de Lausanne, Switzerland
- Jan. 1994 Universität Bielefeld, Germany
- Nov. 1993 Université de Lausanne, Switzerland