Natural contrast statistics and the selection of visual fixations. - Raghu G. Raj; Wilson S. Geisler; Robert A. Frazor; Alan C. Bovik (ICIP (3), 2005)

Independent Encoding of Position and Orientation by Population Responses in Primary Visual Cortex. - Robert A. Frazor; Andrea Benucci; Matteo Carandini (BVAI, 2007)