Wallis, GM Department Human Perception, Cognition and Action, Max Planck Institute for Biological Cybernetics, Max Planck Society; Max Planck Institute for Biological Cybernetics, Max Planck Society;
https://brill.com/view/journals/sv/14/3-4/article-p237_2.xml (Publisher version)
Wallis, G. (2001). Linear models of simple cells: Correspondence to real cell responses and space spanning properties. Spatial Vision, 14(3-4), 237-260. doi:10.1163/156856801753253573.