1. Attneave, F. Symmetry, information and memory for patterns. Amer. J. Psychol., 1954, 68, 209–222.
2. Attneave, F. Transfer of experience with a class-schema to identification-learning of patterns and shapes. J. exp. Psychol., 1957, 54, 81–88.
3. Evans, Selby H. A model for perceptual category formation. Unpublished doctoral dissertation. Texas Christian University, 1964.
4. Evans, Selby H., Edmonds, Ed M., & Mueller, Marvin R. Redundancy as a variable in pattern perception. Paper presented at Southwestern Psychological Association, April, 1966.
5. Oldfield, R. C. Memory mechanisms and the theory of schemata. Brit. J. Psychol., 1954, 45, 14–23.