1. The Rome declaration on world food security;Popul. Dev. Rev.,1996
2. The State of Food Insecurity in the World 2013: The Multiple Dimensions of Food Security,2013
3. The State of Food Insecurity in the World 2014 Strengthening the Enabling Environment for Food Security and Nutrition,2014
4. The Potential Role of Neglected and Underutilised Crop Species as Future Crops under Water Scarce Conditions in Sub-Saharan Africa
5. Sub-Saharan Africa: The state of smallholders in agriculture;Livingston,2011