Shakir Baawi , Salwa, and Zuhal Adil Madlool. “Predicting the Percentage of Air Pollution Gases Using the Particle Swarm Optimization Algorithm”. Tikrit Journal of Pure Science 31, no. 1 (February 25, 2026): 99–106. Accessed February 25, 2026. https://tjpsj.org/index.php/tjps/article/view/1933.