1. Schumpeter, J.A., Theorie der wirtschaftlichen Entwicklung, Duncker & Humblot (1912)
2. Rogers, E.M.: Diffusion of Innovations, 5th edn. Free Press (2003)
3. von Hippel, E.: Democratizing Innovation. New edn. The MIT Press (2006)
4. Donaldson, M.: Human Minds: An Exploration. The Penguin Press, Allen/Lane (1992)
5. Dervin, B.: From the mind’s eye of the user: the sense-making qualitative-quantitative methodology. In: Glazier, J.D., Powell, R.R. (eds.) Qualitative Research in Information Management, Englewood, CO, pp. 61–84 (1992)