Centro Internacional de Mejoramiento de Maíz y Trigo (CIMMYT), 'CIMMYT 1989 Annual report: Beyond subsistance -- New options for Asian farmers', CIMMYT, 1990
Geis, M. and Rees, J. 2011. Climate Change in Africa’s Major River Basins Could Impede Continent’s Farm Transformation Efforts, Increase Cross-Border Water Conflict. Colombo, Sri Lanka: CGIAR Challenge Program for Water and Food.