1. Remote sensing technique as a tool for detecting environmental changes;Abd El Halim;Journal of Soil Science, Egypt,1996
2. Sustainable Land Use in Deserts;Breckle,2001
3. Desertification Exploding the Myth;David,1994
4. European Commission, 1999. The MEDALUS project Mediterranean desertification and land use. In: Kosmas, C., Kirkby, M., Geeson, N. (Eds.), Manual on Key Indicators of Desertification and Mapping Environmentally Sensitive Areas to Desertification.
5. FAO, 1979. A Provisional Methodology for Soil Degradation Assessment. Rome, Italy.