1.
Wittig RM. Chimpanzee cultures – a search for clues. In: Giemsch L, Haidle MN, Hrsg. Being Human: The Beginnings of Our Culture. Accompanying Volume to the Special Exhibition 5 May 2021 – 27 March 2022, Archäologisches Museum Frankfurt. Propylaeum; 2023:122-135. doi:10.11588/propylaeum.1173.c16154