S. Harper, and Y. Yesilada. Invited Tutorial -- 9th International Conference on Web Engineering http://icwe2009.webengineering.org/TutorialAccepted.aspx\#HarperYesilada, (June 2009)
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)