1. Ashmore, M., Duchowski, A.T., Shoemaker, G.: Efficient eye pointing with a fisheye lens. In: GI 2005: Proceedings of Graphics Interface 2005, pp. 203–210. CHCCS (2005)
2. Duchowski, A.T.: Eye Tracking Methodology: Theory and Practice. Springer, Heidelberg (2007)
3. Hansen, J.P., Hansen, D.W., Johansen, A.S.: Bringing Gaze-based Interaction Back to Basics. Systems, Social and Internationalization Design Aspects of Human-computer Interaction (2001)
4. Huckauf, A., Urbina, M.: Gazing with pEYE: new concepts in eye typing. In: APGV 2007: Proceedings of the 4th symposium on Applied perception in graphics and visualization, pp. 141–141. ACM, New York (2007)
5. Isokoski, P.: Text input methods for eye trackers using off-screen targets. In: ETRA 2000: Proceedings of the 2000 symposium on Eye tracking research & applications, pp. 15–21. ACM, New York (2000)