de, Iongh, Martin Tchamba, Wil Tamis, Zelfde, Van’t, Herbert Prins, Haes, de, Hans Bauer, and Sylvain Tiawoun. 1999. “Results of Four years’ Satellite Tracking of Elephants in Northern Cameroon”. Pachyderm 27 (1):62-65. https://doi.org/10.69649/pachyderm.v27i1.974.