1. At the origin of the industrial district: Alfred Marshall and the Cambridge school
2. Sticky Places in Slippery Space: A Typology of Industrial Districts
3. E. J. Feser, “Old and new theories of industry clusters”, in Clusters and regional specialization, edited by M. Steiner (Pion, London, 1998), pp. 18–40.
4. B. Asheim, P. Cooke, and R. Martin, “The rise of the cluster concept in regional analysis and policy: a critical assessment” in Clusters and Regional Development: Critical Reflections and Explorations, edited by B. Asheim et al. (Routledge, Oxon, 2006), pp. 1–29.
5. Why Do Suburban Offices Cluster?