Schroeder-Heister, Peter(2009); Wissenschaftlicher Artikel; The Logica Yearbook 2008, ed. by Michal Peliš. London: College Publiations 2009, pp. 237-251
Yasuoka, Hirokazu(2021-04-14); Teil eines Buches; Tuebingen Paleoanthropology Book Series – Contributions in Paleoanthropology Band 1: Human-elephant interactions: from past to present