{. Elst, F. Aschoff, A. Bernardi, H. Maus, and S. Schwarz. Proceedings of the Twelfth IEEE International Workshops on Enabling
Technologies: Infrastructures for Collaborative Enterprises, page 340--345. IEEE Press, (2003)
A. Abecker, {. Elst, and S. Staab. Professional Knowledge Management: Third Biennial Conference, WM
2005, Kaiserslautern, Germany, April 10--13, 2005, Revised Selected
Papers, volume 3782 of LNCS, page 222--223. Springer, Heidelberg, (2005)
{. Elst, and A. Abecker. IJCAI'2001 Working Notes of the Workshop on Knowledge Management
and Organizational Memories, Seattle, Washington, page 39--48. (August 2001)