2000-2004
  1. NATO ASI/EC Summer School New Theoretical Approaches to Strongly Correlated Systems, Newton Institute, Cambridge 2000.
  2. Workshop on Strongly Correlated Electron Systems, Newton Institute, Cambridge 2000.
  3. XII Workshop on Strongly Correlated Electron Systems, ICTP Trieste, 2000.
  4. Exactly solvable models of statistical mechanics and mathematical physics, APCTP Seoul, 2000.
  5. Low-Dimensional Physics in Solids and Trapped Atoms, NORDITA Copenhagen, 2000.
  6. Symposium on Spin Chains, APS March meeting, Seattle, 2001. 
  7. Theoretical Magnetism Meeting of the UK Magnetism Group, Oxford, 2001.
  8. 2001 Amsterdam Summer workshop on flux, charge, topology and statistics, Amsterdam 2001.
  9. UQ Mathematical Physics Workshop 2001, Brisbane, 2001.
  10. Summer School on low-dimensional quantum systems: Theory and Experiment, Trieste, 2001.
  11. International Workshop on Pi-Conjugated Polymers, Marburg, 2001.
  12. Applications of Conformal Field Theory, IPAM UCLA, 2001.
  13. TH2002, Paris, 2002.
  14. LEES '02, Montauk NY, 2002.
  15. 288. Heraeus Seminar on Quantum Magnetism: Microscopic Techniques for Novel States of Matter, Bad Honnef, 2002.
  16. ISIS-IOP Theoretical Magnetism Meeting, Abingdon 2004.
  17. International Workshop on Frustrated Magnetism, Montauk NY 2004.