M. Ehrig, and Y. Sure. Proceedings of the First European Semantic Web Symposium, volume 3053 of Lecture Notes in Computer Science, page 76-91. Heraklion, Greece, Springer Verlag, (May 2004)
M. Ehrig, Y. Sure, and S. Steffen. Proceedings of the 4th International Semantic Web Conference (ISWC), volume 3729 of LNCS, page 353--367. Galway, Ireland, Springer, (November 2005)
M. Ehrig, and Y. Sure. Professional Knowledge Management: Third Biennal Conference, WM, volume 3782 of LNCS, page 560--569. Kaiserlautern, Germany, Springer, (April 2005)
M. Ehrig, Y. Sure, and S. Staab. Proffesional Knowledge Management: Third Biennial Conference, WM, volume 3782 of LNCS, page 508--517. Kaiserlautern, Germany, Springer, (April 2005)