1. OECD, The Knowledge-Based Economy, Paris: OECD, (1996).
2. Langdom Morris (2011). The Innovation Master Plan, The CEO's guide to innovation, www.InnovationManagement.se, accesed on October 8th, 2013.
3. Tim Kastelle, Jason Potts, Mark Dodgson (2009). The evolution of innovation systems, DRUID Conference, Denmark, 2009.
4. Greg Satell, (2013). Driving Digital Innovation, www.forbes.com/sites/gregsatell/, accessed October 1st, 2013.
5. Lundvall, B-A., Borrás, S. (1997). The Globalising Learning Economy: Implications for Innovation Policy (Draft report based on the preliminary conclusions from several projects under the TSER Programme, DG XII, Commission of the European Union). Luxembourg: Office of Official Publications of the European Communities, (1997).