1. Elias Jabbour, Climate Disasters in the Syrian Arab Republic, Al-Rida Series, Damascus, 2003, p. 27.
2. Jamil Al-Hajari, Climate Drought in Tunisia, Researches of the Water Symposium in the Arab World, Egyptian Geographical Society, Volume One, Cairo, November 26-28, 1994, p. 239.
3. Ali Hassan Musa, Al-Wajeez in the Applied Climate, Dar Al-Fikr, Syria, Damascus, 1982, p. 15.
4. Diaa Saeb Ahmad Al-Alusi, Elements and Phenomena of Iraq’s Climate, Their Modern Characteristics and Trends, PhD thesis in Geography (unpublished), Ibn Rushd College of Education, University of Baghdad, 2009, pg. 57.
5. Ali Sahib Talib Al-Mousawi, Spatial Relationships between Climate Characteristics in Iraq and Choosing the Appropriate Irrigation Method and Method, PhD thesis in Geography, (unpublished), College of Arts, University of Baghdad, 1996, p. 114.