1. Acs, Z. J., Audretsch, D. B., Braunerhjelm, P., & Carlsson, B. (2004) The missing link: The knowledge filter and entrepreneurship in economic growth. CEPR working paper no. 4358. London, UK: Center for Economic and Policy Research
2. Acs, Z. J., Audretsch, D. B., Braunerhjelm, P., & Carlsson, B. (2005) Growth and entrepreneurship: an empirical assessment. CERP working paper no. 5409, London, UK.
3. Agarwal, R., Audretsch, D. B., & Sarkar, M. B. (2007). The process of creative construction: Knowledge spillovers entrepreneurship and economic growth. Strategic Entrepreneurship Journal, 1(3–4), 263–286. doi: 10.1002/sej.36 .
4. Arrow, K. (1962). The economic implication of learning by doing. Review of Economics and Statistics, 80, 155–173.
5. Audretsch, D. B. (2007). Entrepreneurship capital and economic growth. Oxford Review of Economic Policy, 23(1), 63–78. doi: 10.1093/oxrep/grm001 .