Di Stasi, Leandro L., Michael B. McCamy, Andres Catena, Stephen L. Macknik, Jose J. Canas, and Susana Martinez-Conde, “Microsaccade and Drift Dynamics Reflect Mental Fatigue”, European Journal of Neuroscience 38, no. 3 (August 2013), pp. 2389–2398, http://www.ncbi.nlm.nih.gov/pubmed/23675850.
