Mahmood dhaher, ghanim, and suhaib abd aljabbar abd albaqee. “Performance of Spatial Distribution Quality by Ordinary Fuzzy Kriging for Soil Properties under Uncertainty”. AL-Rafidain Journal of Computer Sciences and Mathematics, vol. 17, no. 1, June 2023, pp. 63-69, doi:10.33899/csmj.2023.179473.