1. Acs, Z., Audretsch, D., Braunerhjelm, P. & Carlsson, B. (2004). The missing link: The knowledge filter, entrepreneurship and endogenous growth. Working Paper. Centre for Economic Policy Research, London.
2. Acs, Z., Armington, C., & Zhang, T. (2007). The determinants of new-firm survival across regional economies: The role of human capital stock and knowledge spillover. Papers in Regional Science, 86(3), 367–391.
3. Acs, Z., Braunerhjelm, P., Audretsch, D., & Carlsson, B. (2008). The knowledge spillover theory of entrepreneurship. Small Business Economics, 32(1), 1–15.
4. Acs, Z., Audretsch, D., Braunerhjelm, P., & Carlsson, B. (2011). Growth and entrepreneurship. Small Business Economics. doi: 10.1007/s11187-010-9307-2 .
5. Aghion, P., & Howitt, P. (1992). A model of growth through creative destruction. Econometrica, 60(2), 323–351.