van der Leeuw, S. E., D. Lane, D. Read and S. E. van der Leeuw. 2009. Chapter 3 The long-term evolution of social organization. Pp. 85-116 In: Lane, D., D. Pumain and G. B. West eds., Complexity Perspectives in Innovation and Social Change. Springer Netherlands. ISBN: 978-1-4020-9662-4.