Editor (jointly with Michael Butler and Jan-Erik Roos) of the proceedings
of 'Representation Theory and its Applications' (Uppsala 2004),
Journal of Algebra and its Applications, volume 4 (2005), issues 5 and 6.
Editor (jointly with Alexander Zimmermann) of two issues of 'Algebras and Representation Theory' dedicated to Klaus Roggenkamp on the occasion of his sixtieth birthday, volume 3, issue 4 (2000) and volume 4, issue 1 (2001).
Co-ordinator (1/04-9/05) and deputy co-ordinator (10/05 - 12/06) of
the academic interchange network 'Algebras, Representations and
Applications', funded by the Leverhulme Trust.
Co-ordinator of the AsiaLink network 'Algebras and Representations in China and Europe', funded by EU 2002-5.