A. Brown, Y. Yesilada, C. Jay, and S. Harper. Mobile Web 2.0: Developing and Delivering Services to Mobile Devices, chapter 4, Taylor and Francis, (2011)
G. Brajnik, Y. Yesilada, and S. Harper. W4A '09: Proceedings of the 2009 International Cross-Disciplinary Conference on Web Accessibililty (W4A), page 127--135. New York, NY, USA, ACM, (2009)