1. Alaçam Ö and Dalci M. (2009). ‘A usability study of webmaps with eye tracking tool: the effects of iconic representation of information’, inHuman–Computer Interaction: New Trends, ed. by Macías A and Latorre P M, Springer-Verlag, Berlin, pp. 12–21.
2. Bertin J. (1967|1983).Semiology of Graphics: Diagrams, Networks, Maps, University of Wisconsin Press, Madison, WI (translated from French in 1983).
3. Brodersen L, Anderson HK and Weber S. (2002).Applying Eye-Movement Tracking for the Study of Map Perception and Map Design, Kort & Matrikelstyrelsen, Copenhagen.
4. Burt JE, Barber GM and Rigby DL. (2009).Elementary Statistics for Geographers, 3rd ed. Guilford Press, New York.
5. Castner HW. (1973). ‘Electrooculography in Cartographic Research’, inCanadian Association of Geographers Annual Meeting, Thunder Bay, Ont., May.