S. ABBAS, M. R. K. ANSARI, and A. M. ILYAS, “Population Density Pattern Using Spatial Interaction Models and its Simulation”, jictra, pp. 75–94, Dec. 2018, Accessed: Aug. 25, 2026. [Online]. Available: https://www.jictra.com.pk/index.php/jictra/article/view/39