Proceedings of the Royal Society of London В (DOI 10.1098/ rspb.2003. 2548).
213
Aiello L. and Dean C. An introduction to human evolutionary anatomy. London: Academic Press, 1990.
214
Gallup G. G. (Jr.). 1997. On the rise and fall of self-conception in primates. In The Self: Across Psychology of self-recognition, self-awareness, and the Self Concept. Annals of the NY Acad. Sci. 818: 4–17.
