Call, Josep Department of Developmental and Comparative Psychology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society;
Call, J. (2003). Beyond learning fixed rules and social cues: abstraction in the social arena. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences, 358(1435), 1189-1196. doi:10.1098/rstb.2003.1318.