is author/editor of the following titles:
Gestural Communication in Nonhuman and Human Primates
[Benjamins Current Topics, 10] 2007. xiv, 284 pp.
is author of the following articles:
Gesture 6:1, 1–382006. “Gestural communication of orangutans (Pongo pygmaeus)”.
Gesture 4:2, 255–2632005. “Gestural Communication in Nonhuman and Human Primates. Workshop held at the Max Planck Institute for Evolutionary Anthropology, Leipzig, March 28th–30th, 2004.”.