Willems, E P; Arseneau, T Jean M; Schleuning, Xenia; van Schaik, C P (2015). Communal range defence in primates as a public goods dilemma. Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 370(1683):20150003.
MacLean, E L; Hare, B; Nunn, C L; Burkart, J M; et al; van Schaik, Carel P (2014). The evolution of self-control. Proceedings of the National Academy of Sciences of the United States of America, 111(20):E2140-E2148.