S. Harper. University of Manchester (UoM), Manchester, UK, Doctor of Philosophy in Computer Science, (June 2001)Now there's a funny story here. In short, I've lost the electronic copy. Got the paper one and it's lodged in two libraries so I did do it... but no personal pdf version..
S. Harper, C. Goble, R. Stevens, and Y. Yesilada. Proceedings of the The Twelfth International World Wide Web Conference, New York, USA, ACM Press, (May 2003)
S. Harper, S. Bechhofer, and D. Lunn. ASSETS '06: Proceedings of the 8th International ACM SIGACCESS Conference on Computers and Accessibility, page 259--260. New York, NY, USA, ACM Press, (October 2006)