Msallam, M. M., Z. H. Ahmed, H. B. Haron, S. A. B. Idris, and H. Garg. “Improved Fire Hawk Optimizer With Crossover Scheme for Text Document Clustering”. Contemporary Mathematics, vol. 7, no. 3, May 2026, pp. 3086-18, doi:10.37256/cm.7320269070.