Al-Hasoud, Ghanim, and Mohammed Qasim. “Analyze the Heterogeneity Structure of Two Sets of Different Spatial Data With Prediction”. Journal of Education and Science 19, no. 4 (June 1, 2007): 100–113. Accessed September 5, 2025. https://ojs.uomosul.edu.iq/index.php/edusj/article/view/42487.