共 18 条
[11]
经济发展理论[M]. 商务印书馆 , 熊彼特, 1990
[12]
Technological and geographical proximity effects on knowledge spillovers: evidence from the US patent citations[J] . Luigi Aldieri.Economics of Innovation and New Technology . 2011 (6)
[13]
Networks of inventors and the role of academia: an exploration of Italian patent data[J] . Margherita Balconi,Stefano Breschi,Francesco Lissoni.Research Policy . 2003 (1)