1. The size, scale, and shape of cities;M Batty;science,2008
2. Bettencourt, L, Lobo, J, Hyejin, Y. The Hypothesis of Urban Scaling: Formalization, Implications and Challenges. SFI Working Paper. 2013;.
3. The life and death of great American cities;J Jacobs,1961
4. The economy of cities;J Jacobs,1970
5. Increasing returns and long-run growth;PM Romer;The journal of political economy,1986