Sep 28, 2012 Mathematics Colloquium, Texas Christian University, Fort Worth, USA.

Sep 6, 2012 Physikzentrum Bad Honnef, Bad Honnef, Germany. Lecture 1.

June 1, 2012 Conference talk, ICMS, Edinburgh, Scotland. Download slides.

Mar 14, 2012 Institute for Advanced Study, Princeton, USA. Download slides.

Nov 9, 2011 PDE and Analysis Seminar, University of Pittsburgh, USA.

July 4, 2011 Conference talk, Erwin Schrödinger Institute, Vienna, Austria.

Jan 27, 2011 Department Seminar, University of Washington, USA.

Jan 25, 2011 Graduate Seminar, University of Washington, USA.

Jan 19, 2011 Physics Colloquium, Department of Physics, Baylor University, USA.

Jan 8, 2011 Conference talk, Joint Mathematics Meeting, New Orleans, USA.

Nov 5, 2010 Mathematical Physics Seminar, Texas A&M University, USA.

Oct 29, 2010 Workshop talk, University of Texas at Arlington, USA.

Jul 2, 2010 Conference talk, Jacobs University, Germany.

May 12, 2010 Berkeley/Bonn/Paris/Zürich Video Seminar, University of Bonn, Germany.

Feb 15, 2010 Seminar talk, Baylor University, USA.

Dec 15, 2009 Seminar talk, University of Zürich, Switzerland.

Dec 1, 2009 Seminar talk, University of Bonn, Germany.

Oct 15, 2009 Conference talk, Erwin Schrödinger Institute, Austria.

Jul 20, 2009 PDE Seminar, IMPA, Brazil.

April 23, 2009 Conference talk, University of Edinburgh, UK.

Feb 12, 2009 Mathematisches Forschungsinstitut Oberwolfach, Germany.

Jan 21, 2009 Integrable Systems Seminar, Imperial College London, UK.

Sep 12, 2008 PDE/Analysis seminar, Department of Mathematics, MIT, USA.

Sep 10, 2008 Guest lecture, Department of Mathematics, MIT, USA.

Aug 25, 2008 High Energy Physics Seminar, Caltech, USA.

Aug 4, 2008 Conference talk, Banach Center, Bedlewo, Poland.

Apr 1, 2008 Oberseminar, Leibniz Universität Hannover, Germany.

Mar 14, 2008 Graduate Seminar, DAMTP, Cambridge University, UK.

Jan 9, 2008 Seminar talk, Trinity College Dublin, Ireland.

Nov 17, 2006 PDE Seminar, Department of Mathematics, UCSB, USA.

May 12, 2006 Applied Math Seminar, Stanford University, USA.

May 11, 2006 PDE Seminar, Department of Mathematics, UC Davis, USA.

May 2, 2006 PDE Seminar, Department of Mathematics, UCSD, USA.

Apr 28, 2006 PDE Seminar, Department of Mathematics, UCSB, USA.

Apr 26, 2006 Seminar talk, Control and Dynamical Systems, Caltech, USA.

Apr 21, 2006 Seminar talk, Department of Mathematics, UCLA, USA.

Apr 8, 2006 AMS Central Sectional Meeting, Notre Dame University, USA.

Nov 1, 2005 Institute Seminar, Institut Mittag-Leffler, Sweden.

Jun 7, 2004 Conference talk, University of Oslo, Norway.

Mar 31, 2004 Licentiate Seminar, Lund University, Sweden.

Mar 12, 2004 PDE Seminar, Brown University, USA.

Jan 28, 2004 Mathematisches Forschungsinstitut Oberwolfach, Germany.

Jul 26, 2002 Conference talk, Gregynog Hall, Wales.