1. F. Abu Nukta, Soil of Hauran Basin (Syria): General and Classification (Damascus University of Agricultural Sciences, Damascus, 1982) [in Arabic].
2. F. Abu Nukta, R. Parkinson, “Effect of humic substances on micronutrients availability in soils,” Damascus Univ. J. Agric. Sci. 23 (2), 163–178 (2007).
3. Classification of Lands of ACSAD Research Stations (Arab Center for the Studies of Arid Zones and Dry Lands, Damascus, 2010) [in Arabic].
4. F. Al-Hnedi, W. Mesper, and Y. Yunis, “Study the changing of calcium carbonate in the soils from Heer Sharky Plain using remote Sensing technique,” Damascus Univ. J. Agric. Sci. 30 (4), 41–51 (2014).
5. H. Ali, PhD Thesis (University of Damascus, Damascus, 2015).