1. Jordan National Strategy and Action Plan to Combat Desertification, Ministry of Environment. http://alic.arid.arizona.edu/jordansoils/_html/NAP.pdf
2. Jordan, Desertification Government Focal Point, Ministry of Environment. http://www.un.org/esa/agenda21/natlinfo/countr/jordan/desertification.pdf
3. www.un.org/esa/agenda21/natlinfo/wssd/jordan.pdf
4. Critoph, R.E. and Thompson, K., Solar Energy for Cooling and Refrigeration. http://www2.warwick.ac.uk/fac/sci/eng/staff/dbm/es368/solarcool.pdf
5. Solar Powered Refrigerator. www.enotes.com/topic/Solar_powered_refrigerator