Introducing COGAIN: communication by gaze interaction. - Richard Bates; Michael Donegan; Howell O. Istance; John Paulin Hansen; Kari-Jouko Räihä (Univers. Access Inf. Soc., 2007)

Eye Tracking. - Päivi Majaranta; Richard Bates; Michael Donegan (The Universal Access Handbook, 2009)