1. The dynamics of product innovation and firm competences;Strategic Management Journal,2002
2. On the nature of technologies: knowledge, procedures, artifacts and production inputs;Cambridge Journal of Economics,2010
3. Knowledge networks and technological capabilities of SMEs: the role of technology strategies and its implications for knowledge service intermediaries;Asian Journal of Technology Innovation,2013
4. Erickson, F. (1986), “Qualitative methods in research on teaching”, in Wittrock, M.C. (Ed.), The Handbook of Research on Teaching, Macmillan, New York, NY, pp. 119-161.
5. Eurostat (2013), “Eurostat: industry trade and services” (cf. statistics), available at: http://epp.eurostat.ec.europa.eu/cache/ity_offpub/ks-sf-12-050/en/ks-sf-12-050-en.pdF (accessed October 29, 2016).