S. Harper. Invited Talk -- Laboratory of Human-Computer Interaction for Special Needs, University of the Basque Country, Donostia - San Sebastian, Spain. http://www.simonharper.info/publications/Harper2009nr.pdf, (November 2009)
S. Harper, and Y. Yesilada. Invited Tutorial -- 9th International Conference on Web Engineering http://icwe2009.webengineering.org/TutorialAccepted.aspx\#HarperYesilada, (June 2009)
S. Harper. (2007)General Chair-Simon Harper and Program Chair-Helen Ashman and Program Chair-Mark Bernstein and Program Chair-Alexandra Cristea and Program Chair-Hugh C. Davis and Program Chair-Paul De Bra and Program Chair-Vicki Hanson and Program Chair-Dave Millard.