1. Berry BJL (1961) Basic patterns of economic development. In: Ginsburg N (ed) Atlas of economic development. University of Chicago Press, Chicago, pp 110–119
2. Boulding K (1985) Regions of time. Pap Reg Sci Assoc 57(1):19–32
3. Easterlin RA (1975) An economic framework for fertility analysis. Stud Fam Plann 6(3):54–63
4. Geyer HS, Kontuly TM (eds) (1996) Differential urbanization: integrating spatial models. Arnold, London
5. Grimner JN, Bremner J (2012) Achieving a demographic dividend. Population Bulletin vol 63, no 2. Population Reference Bureau, Washington, DC