1. Elaboration of an International Convention to Combat Desertification in Countries Experiencing Serious Drought and/or Desertification, Particularly in Africahttp://www.preventionweb.net/files/5650_convunccdeng.pdf
2. World Map of the Status of Human-Induced Soil Degradation: An Explanatory Note;Oldeman,1990
3. Crop-Livestock Production Systems in the Sahel—Increasing Resilience for Adaptation to Climate Change and Preserving Food Securityhttp://animalagclimatechange.org/wp-content/uploads/Building_Resilience_for_Adaptation.pdf#page=268
4. Global Assessment of Land Degradation and Improvement 1: Identification by Remote Sensinghttp://www.isric.org/isric/webdocs/docs/Report%202008_01_GLADA%20international_REV_Nov%202008.pdf
5. The Land Degradation Assessment in Drylands (LADA) project: Reflections on indicators for land degradation assessment;Nachtergaele,2009