- Grenoble Aug 2001 (Alg. Geometry workshop)
- Lisbon July 2003 (Algebra Conf.)
- Beijing Sep. 2004 (K-Theory workshop)
- Beijing March 2006 (K-Theory workshop)
- Sedano, Burgos, January 2007 (K-Theory workshop)
- Belfast, June 2007 (Crash course by Wilberd van der Kallen)
- Tokyo, July 2007 (Motive workshop)
- Belfast, Aug 2007 (LMS workshop)
- Kyoto, June 2008 (K-Theory workshop)
