Nakatani, Chie, and Cees van Leeuwen. “A Pragmatic Approach to Multi-Modality and Non-Normality in Fixation Duration Studies of Cognitive Processes”. Journal of Eye Movement Research 1, no. 2 (July 9, 2008). Accessed April 19, 2024. https://bop.unibe.ch/JEMR/article/view/2237.