Talks:
Symposium on Complexity and Criticality in memory of Per Bak, Copenhagen, August 2003
Seminar at the University of Maryland, 28.5.2004
Bad Honnef, 21.6.2005
Künstlerhaus Dortmund, 4.12.2005
Seminar at Helsinki University of Technology, October 2006
DPG Spring meeting, Regensburg, 29.3.2007
MRS fall meeting, Boston, 26.11.2007
Program for Evolutionary Dynamics, Harvard, 27.11.2007
Wissenschaftlicher Kreis, Universität zu Köln, 14.12.2007
Colloquium, Institute of Physics, Prague, 1.11.2011
Colloquium, Department of Physics, Göteborg, 15.3.2012