Tagg, N, McCarthy, M, Dieguez, P, Bocksberger, G, Willie, J, Mundry, R, Stewart, FA, Arandjelovic, M, Widness, J, Landsmann, A, Agbor, A, Angedakin, S, Ayimisin, AE, Bessone, M, Brazzola, G, Corogenes, K, Deschner, T, Dilambaka, E, Eno-Nku, M, Eshuis, H et al, Goedmakers, A, Granjon, AC, Head, J, Hermans,, V, Jones, S, Kadam, P, Kambi, M, Langergraber, K, Lapeyre, V, Lapuente, J, Lee, K, Leinert, V, Maretti, G, Marrocoli, S, Meier, A, Nicholl, S, Normand, E, Ormsby, LJ, Piel, AK, Robinson, O, Sommer, V, de Heegde, M, Tickle, A, Ton, E, van Schijndel, J, Vanleeuwe, H, Vergnes, V, Wessling, E, Wittig, R, Zuberbuehler, K, Kuehl, H and Boesch, C (2018) Nocturnal activity in wild chimpanzees (Pan troglodytes): evidence for flexible sleeping patterns and insights into human evolution. American Journal of Physical Anthropology, 166 (3). pp. 510-529. ISSN 1096-8644