1. Acs ZJ, Armington C (1998) Longitudinal establishment and enterprise microdata (LEEM) documentation. Center for Economic Studies, Bureau of the Census, Washington
2. Audretsch DB (1995) Innovation and industry evolution. MIT Press, Cambridge
3. Audretsch DB, Thurik AR (1997) Sources of growth: the entrepreneurial versus the managed economy. Tinbergen Institute discussion paper TI 97–109/3, Erasmus Uni-versity Rotterdam
4. Audretsch DB, Feldman MP (1996) Knowledge spillovers and the geography of innovation. American Economic Review 86 (3): 630–640
5. Audretsch DB, Stephan PE (1996) Company-scientist links: the case of biotechnology. The American Economic Review 86 (3): 631–640