Daniele, Vittorio and Marani, Ugo (2007): Criminalità e investimenti esteri. Un’analisi per le province italiane. Unpublished.
Di Iorio, Francesca and Fachin, Stefano (2010): A Panel Cointegration study of the long-run relationship between Savings and Investments in the OECD economies, 1970-2007. Unpublished.