S. Harper, C. Goble, R. Stevens, und Y. Yesilada. Proceedings of the ACM SIGACCESS Conference on Computers and Accessibility, Seite 63--70. ACM Press, (Oktober 2004)
S. Harper, Y. Yesilada, C. Goble, und R. Stevens. Proceedings of the Fifteenth ACM Conference on Hypertext and Hypermedia, Seite 116--125. ACM Press, (August 2004)
S. Harper, und N. Patel. Assets '05: Proceedings of the 7th international ACM SIGACCESS conference on Computers and accessibility, Seite 90--97. New York, NY, USA, ACM Press, (Oktober 2005)