1. Abell, D. F. (1980). Defining the business: The starting point of strategic planning. Englewood Cliffs, NJ: Prentice Hall.
2. Aven, T., & Renn, O. (2010). Risk management and governance: Concepts, guidelines, applications. Heidelberg: Springer.
3. Balzer, H., & J. Askonas. (2016). The Triple Helix after communism: Russia and China compared. Triple Helix, 2, 13. Retrieved from http://triplehelixjournal.springeropen.com/articles/10.1186/s40604-015-0031-4
4. Barsukova, S. (2004). Informal economy: Economic and sociological analysis (Neformal’naya ekonomika: ekonomiko-sotsiologicheskii analiz) (p. 447). Moscow: SU HSE.
5. Block, F. (2011). Innovation and the invisible hand of government. In F. Block & M. R. Keller (Eds.), State of innovation: The U.S. government’s role in technology development (pp. 1–26). Boulder, CO and London: Paradigm Publishers.