1. Ameden, H. 2008. The Economics of Invasive Species, Border Enforcement, and Firm Response. Ph.D. dissertation, University of California, Berkeley, Spring, 115 pp.
2. Border enforcement and firm response in the management of invasive species;Ameden;Journal of Agricultural and Applied Economics,2007
3. Complex organization and bifurcation within environmental bounds (COBWEB): An agent-based approach to simulating adaptation;Bass;International Society for Environmental Information Sciences Environmental Informatics Archives,2004
4. Brody, S. D. 2007. Borders enforcement, importer behavior, and trade-related invasive species risk: A spatial damage function component. Draft Report. Texas A&M University.
5. Brunke, H. and C. Stanford . 2003. Commodity profile: broccoli (including Kohlrabi). Agricultural Marketing Resource Center, Agricultural Issues Center, University of California.