Interregional Inventor Networks as Studied by Patent Co-inventorships

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Knowledge networks in the Dutch aviation industry: The proximity paradox (2012, background): “…proximity, we calculate the logarithm of the geographical distance in kilometers between two actors, which results in a continuous positive variable.4 While other studies use travel time (Ejermo and Karlsson, 2006), the spatial scale of the network of Dutch aviation industry is rather small.”
Applying social network analysis in economic geography: framing some key analytic issues (2009, background): “In providing empirical evidence, they were among the first to use patent data as relational data (see also Breschi and Lissoni 2004), provoking a trend in research on inventor networks (Balconi et al. 2004; Cantner and Graf 2006; Ejermo and Karlsson 2006 ).”
Knowledge flows and the absorptive capacity of regions (2015, background): “This latter evidence has also motivated a number of papers looking at the determinants of these two phenomena (Chessa et al., 2013; Ejermo and Karlsson, 2006; Hoekman et al., 2010; Maggioni and Uberti, 2009; Morescalchi et al., 2013).”