Wittig, Roman M. Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Froehlich, M., Mueller, G., Zeitraeg, C., Wittig, R. M., & Pika, S. (2017). Developmental effects on gestural employment of chimpanzees in the wild. Folia primatologica, 88(2), 150-151. doi:10.1159/000479094.