1. Abramson, N.H., Encarnação, J., Reid, P.P., Schmoch, U., 1997. Technologietransfer-Systeme in den USA und Deutschland, Fraunhofer IRB Verlag, Karlsruhe/Washington, DC.
2. Real effects of academic research;Acs;American Economic Review,1992
3. Arthur Anderson et al., 1994. UK Biotech '94. n.p.
4. Audretsch, D.B., Stephan P.E., 1994. How localized are networks in biotechnology? Discussion Paper FSIV94-8, Center for Social Research, Berlin.
5. BIO, Biotechnology Industry Organization, 1998, Biotechnology Drug Products, http//:www.bio.org.library/3drugs.dgw, 17 pages, visited May 31, 1998.