7Kinderlerer, Julian "Intellectual Property Rights, Issues Related to Biotechnology", Guide to Risk Assessment and Biosafty in Biotechnology, a Program of UN, 1997. 12
8Richer, David L. 1997 "Intellectual Property Protection:Who needs it?" Agricultural Biotechnology and the Poor, the Proceeding of an International Conference on Biotechnology, convened by CGIAR and US National Academy of Sciences
9Lehmann, Volker "Patent on Seed Sterility Threatens Seed Saving", 1998. 6, Biotechnology and Development Monitor