1. Angeli, A., Davidoff, J., & Valentine, T. (2001). Distinctiveness induces categorical perception of unfamiliar faces. Perception, 30 (Suppl.), 58.
2. Barton, J. J. S., Radcliffe, N., Cherkasova, M. V., Edelman, J., & Intriligator, J. M. (2006). Information processing during face recognition: The effects of familiarity, inversion, and morphing on scanning fixations. Perception, 35, 1089–1105.
3. Baxter, J. C. (1970). Interpersonal spacing in natural settings. Sociometry, 33, 444–456.
4. Beale, J. M., & Keil, F. C. (1995). Categorical effects in the perception of faces. Cognition, 57, 217–239.
5. Blanz, V. (2000). Automatische Rekonstruktion der dreidimensionalen Form von Gesichtern aus einem Einzelbild. Dissertation zur Erlangung des Grades eines Doktors der Naturwissenschaften, Eberhard-Karls-Universität, Tübingen, Germany.