F. F. Showkat, “TIME-CONSTRAINS PROJECT SCHEDULING PROBLEM WITH ACTIVITIES ALTERNATIVES, ANT COLONY OPTIMIZATION APPROACH”, Al-Nahrain J. Sci., vol. 12, no. 1, pp. 134–142, Mar. 2009, Accessed: May 22, 2026. [Online]. Available: https://anjs.edu.iq/index.php/anjs/article/view/1276