Grossman, Gene, and Elhanan Helpman, 1991, Innovation and Growth in the Global Economy, MIT Press, Cambridge, Massachusetts.
Guerrieri, Paolo, and Valentina Meliciani, 2004, “International Competitiveness in Producer Services”, Paper prepared for the Conference: “What Do We Know About Innovation? A Conference in Honour of Keith Pavitt”, University of Sussex, 2004.
Guiso, Luigi, Jappelli, Tullio, Padula, Mario, and Marco Pagano, 2004: “Financial Market Integration and Economic Growth in the EU”, Economic Policy, Vol. 40, pp. 523–577.
Hall, Bronwyn, Jaffe, Adam, and Manuel Trajtenberg, 2001, The NBER Patent Citations Data File: Lessons, Insights and Methodological Tools, CEPR Discussion Paper no. 3094.
Keller, Wolfgang, 2002, Geographic Localization of International Technology Diffusion, American Economic Review, Vol. 92, pp. 120–142.
Kok, Wim, 2004, Facing the Challenge. The Lisbon Strategy for Growth and Employment, Report from the High Level Group chaired by Wim Kok submitted to the European Council.
Maggi, Bernardo, Espa, Giovanni, and Daniela Federici, 2002, Statistical Economic Approach to Mixed Stock-Flow Dynamic Models in Macroeconomics, Quaderni di Statistica e Matematica Applicata alle Scienze Economico-Sociali, vol. XX-XXI, pp. 3–28.
Maggi, Bernardo, 2005, Structural Models and Empirical Analysis of Technology Accumulation and Diffusion: a Disequilibrium Approach, CIDEI Working Paper, forthcoming.
Miozzo Marcella, and Luc Soete, 2001, “Internationalisation of Services: a Technological Perspective”, Technological Forecasting and Social Change, Vol. 67, pp. 159–185.
Mun, Sung-Bae, and Ishaq Nadiri, 2002, Information Technology Externalities: Empirical Evidence From 42 U.S. Industries, NBER Working Paper no. 9272.
Nicoletti, Giuseppe, and Stefano Scarpetta, 2003, “Regulation, Productivity and Growth”, Economic Policy, Vol. 36, pp. 9–72.
Nicoletti, Giuseppe, Scarpetta, Stefano, and Olivier Boylaud, 2000, Summary Indicators of Product Market Regulation, OECD Economic Department Working Paper no. 226.
Padoan, Pier Carlo, 1998, “Trade, Knowledge Accumulation and Diffusion. A Sectoral Perspective”, Structural Change and Economic Dynamics, Vol. 9, pp. 349–72.
Peri, Giovanni, 2004, “Knowledge Flows and Productivity”, Rivista di Politica Economica, March- April, pp. 21–59.