1. Aydalot P (ed) (1986) Milieux innovateurs en Europe. Gremi, Paris
2. Beguin H (1988) La région et les lieux centraux. In: Ponsard C (ed) Analyse économique spatiale. Economica, Paris, pp 231–276
3. Boissevain J, Mitchell JC (eds) (1973) Network analysis: studies in human interaction. Mouton, The Hague
4. Camagni R (1988) Functional integration and locational shifts in the new technology industry. In: Ph. Aydalot and D. Keeble (eds) (1988), pp 48–64
5. Camagni R (1989a) Local milieu, uncertainty and innovation networks: towards a new dynamic theory of economic space, paper presented at the Gremi Conference on Innovation Networks, Barcelona, April; now in R. Camagni (1991), pp 121–144