1. Desertification: Exploding the myth.;DSG Thomas,1994
2. Desertification - time for an assessment?;U Helldén;Ambio,1991
3. Introduction: The “Greening” of the Sahel.;CF Hutchinson;Journal of Arid Environments,2005
4. Ecosystems and Human Well-being: Desertification Synthesis.,2005
5. Hot deserts of Egypt and Sudan.;MA Ayyad,1985