1. DFG International workshop, Adaptive finite elements: Analysis and application, Kirchzarten, Germany,September 7-11, 2009.
2. DFG conference on Planetary Magnetism, Space-time models of Earth's magnetic field, Wernigerode, Germany, October 18-21, 2011.
3. DPG international conferences,Macroscopic stress and displacement response functions of static granular layers,Technical University Berlin, Germany, February 25-29, 2008.
4.DPG international conferences, Macroscopic stress and strain distributions in sand piles, University of Regensburg, Germany, March 26-30, 2007.