1. Bahnsen, P. (1928). Eine Untersuchung über Symmetrie und Asymmetrie bei visuellen Wahrnehmungen. Zeitschrift für Psychologie, 108, 129–154.
2. Barrow, H. G., & Tennenbaum, J. M. (1978). Recovering intrinsic scene characteristics from images. In A. Hanson & E. Riseman (Eds.), Computer vision systems (pp. 3–26). New York: Academic Press.
3. Brainard, D. H. (1997). The psychophysics toolbox. Spatial Vision, 10, 433–436. doi: 10.1163/156856897X00357
4. Cavanagh, P. (1987). Reconstructing the third dimension: Interactions between color, texture, motion, binocular disparity, and shape. Computer Vision, Graphics, and Image Processing, 37(2), 171–195.
5. Ghose, T., & Palmer, S. E. (2010). Extremal edges versus other principles of figure–ground organization. Journal of Vision, 10(8), 3:1–17.