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S. Harper, S. Bechhofer, und D. Lunn. SIGDOC '06: Proceedings of the 24th Annual Conference on Design of Communication, Seite 64--69. New York, NY, USA, ACM Press, (2006)
S. Harper, und S. Bechhofer. Proceedings of the ISWC 2004 Workshop on Knowledge Markup and Semantic Annotation (Semannot'2004), Hiroshima, Japan, CEUR Workshop Proceedings (CEUR-WS.org), (November 2004)
S. Harper, S. Bechhofer, und D. Lunn. ASSETS '06: Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility, Seite 259--260. New York, NY, USA, ACM Press, (Oktober 2006)