Depauw, Sarah, and Roxanna Van Riemsdijk. “Supportive Nutrition for Elderly Chimpanzees: A Case Study on Non-Invasive Supplementation in a Group Setting”. Journal of Zoo and Aquarium Research, vol. 13, no. 4, Oct. 2025, pp. 241-4, https://www.jzar.org/jzar/article/view/989.