Inogwabini, B.-I., L. Mbende, and A. Mbenzo. “The Relic Population of Forest Elephants Near Lake Tumba, Democratic Republic of Congo: Abundance, Dung Lifespan, Food Items and Movements”. Pachyderm, vol. 49, June 2011, pp. 40-47, https://pachydermjournal.org/index.php/pachyderm/article/view/249.