Rehab Raheem Kadhim, Mushtak A.K. Shiker. “Implement a Strategy to Reduce Time While Paying Attention to Costs Through Crashing”. The International Journal of Multiphysics, vol. 18, no. 3, Sept. 2024, pp. 1256 -2, https://www.themultiphysicsjournal.com/index.php/ijm/article/view/1429.