Hohmann, Gottfried Bonobos, Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
http://mahale.main.jp/PAN/10_2/10(2)_05.html (Any fulltext)
Hohmann, G., & Fruth, B. (2003). Lui Kotal - A new site for field research on Bonobos in the Salonga National Park. Pan Africa News, 10(2), 25-27.