International competitiveness in the ICT industry: Evaluating the performance of the top fifty companies, Global Economic Review 36(2): 167-182, 2007. In common with N. Tzeremes.

International competitiveness in the ICT industry: Evaluating the performance of the top fifty companies, Global Economic Review 36(2): 167-182.(SCOPUS, EconLit, ISI Listed. Impact factor: 0.273 and 5-year: 0.560). In common with N. Tzeremes (2007).