1. Ács, Z. J., & Audretsch, D. B. (2009). Innovation and small firms. Cambridge: MIT Press.
2. Ács, Z. J., Braunerhjelm, P., Audretsch, D. B., & Carlsson, B. (2009). The knowledge spillover theory of entrepreneurship. Small Business Economics, 32, 15–30.
3. Amoroso, S. and Link, A.N. (2019). Intellectual property protection mechanisms and the characteristics of founding teams. European Commission Joint Research Centre working paper 01–2019.
4. Anton, J. J., & Yao, D. A. (2003). Patents, invalidity, and the strategic transmission of enabling information. Journal of Economics and Management Strategy, 12, 151–178.
5. Audretsch, D. B. (1995). Innovation and industry evolution. Cambridge: MIT Press.