1. Adams, R. W. Peripheral vision and visual attention. Unpublished doctoral dissertation, Iowa State University, 1971.
2. Garner, W. R., & Clement, D. E. Goodness of pattern and pattern uncertainty. Journal of Verbal Learning & Verbal Behavior, 1963, 2, 446–452.
3. Geissler, L. R. Form perception in indirect vision. Psychological Bulletin, 1926, 23, 135–136.
4. Gibson, J. J. The senses considered as perceptual systems. Boston: Houghton Mifflin, 1966.
5. Gourevitch, V., & Galanter, E. A significance test for one parameter isosensitivity functions. Psychometrika, 1967, 32, 25–33.