Najeeb , Galawizh Muhammad, and Nzar A. Ali. “Improving Performance of Spatial Database Based on Hybrid Machine Learning and Hilbert Curve Data Structure: ”. Halabja University Journal 8, no. 4 (December 30, 2023): 250–272. Accessed May 9, 2024. https://huj.uoh.edu.iq/index.php/HUJ/article/view/huj-10505.