1Judith I.Stallmann.Impacts of the 1930 Plant Patent Act on private fruit breeding investment[D].Ph.D.Dissertation.East lansing,Michigan.Department of Agricultural Economics,Michigan State University,1986.
2Peter J.Goss.Guiding the Hand That Feeds:Toward Socially Optimal Appropriability in Agricultural Biotechnology Innovation[J].California law Review,1996,84:1395-1436.
3Giancarlo Moschini,Harvey Lapan.Intellectual property rights and the welfare effects of agricultural R&D[M].Ames.lowa:lowa State University,Dept.of Economics,1997.
4William Lesser.An Economic Approach to Identif-ying an‘Effective Sue Generis System' for Plant variety Protection under TRIPs[J].Agribusiness,2000,16(1):96-114.
5Cenrner J.Terence,Fred C.White.Protection Inventors'Intellectual Property Rights in Biotechnology[J].Westem Journal of Agricultural Economics,1989,14(2):189-199.
6Stegemann,Klaus.The Integration of Intellectual Property Rights into the WTO System[J].Journal of World Trade,2000,29(9):232-243.
