Marrocu, E.; Usai, S.; Paci, R. - Centro Ricerche Nord Sud (CRENoS) - 2013
social proximity and by their position within networks in terms of centrality and closeness. Our analysis is based on … technological proximity, followed by the geographical one, while the other proximities (social, institutional and organizational …) have a limited effect. Third, we find evidence on the positive role played by networks, through preferential attachment and …