Ciriaci, Daria (2009): University quality, interregional brain drain and spatial inequality. The case of Italy.
De Prato, Giuditta and Nepelski, Daniel (2012): Global technological collaboration network. Network analysis of international co-inventions. Forthcoming in:
Picci, Lucio (2008): The Internationalization of Inventive Activity: A Gravity Model Using Patent Data.
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