Buchanan, Gale, Robert W. Herdt, Luther G. Tweeten, and Norman E. Borlaug. “Agricultural Productivity Strategies for the Future: Addressing U.S. And Global Challenges”. Council for Agricultural Science and Technology (CAST) (January 15, 2010). Accessed July 1, 2026. https://publications.cast-science.org/CAST/article/view/129.