M. AL-Tahat, I. Jalham, A. Al-Refaie, and M. F. A. Yousef "Activity-Based Cost Estimation Model for The Extrusion of Variant Aluminum Profiles", Advances in Science, Technology and Engineering Systems Journal, vol. 6, no. 3, pp. 172–181, 2021, doi: 10.25046/aj060320.