Filippetti, Andrea and Frenz, Marion and Ietto-Gillies, Grazia (2013) The role of internationalization as a determinant of innovation performance: an analysis of 42 countries. Working Paper. Birkbeck College, University of London, London, UK.

Filippetti, Andrea and Frenz, Marion and Ietto-Gillies, Grazia (2011) Are innovation and internationalization related? an analysis of European countries. Industry and Innovation 18 (5), pp. 437-459. ISSN 1366-2716.

Ietto-Gillies, Grazia (2010) The current economic crisis and international business: can we say anything meaningful about future scenarios? Futures 42 (9), pp. 910-919. ISSN 0016-3287.

Frenz, Marion and Ietto-Gillies, Grazia (2009) The impact on innovation performance of different sources of knowledge: evidence from the UK Community Innovation Survey. Research Policy 38 (7), pp. 1125-1135. ISSN 0048-7333.

Frenz, Marion and Ietto-Gillies, Grazia (2007) Does multinationality affect the propensity to innovate? an analysis of the third UK community innovation survey. International Review of Applied Economics 21 (1), pp. 99-117. ISSN 0269-2171.