We suggest three theoretical propositions on the nature, channels and boundaries of knowledge spillovers, and we test them with knowledge production functions estimated on French NUTS 3 regions over 2002–2008. Several novelties are introduced. First, we quantify external R&D to complement the...

This paper aims to contribute to the empirical identification of clusters by proposing methodological issues based on network analysis. We start with the detection of a composite knowledge process rather than a territorial one stricto sensu. Such a consideration allows us to avoid the...