A. J. . Hasan and H. S. . Shebeeb, “Evaluating the Economic performance efficiency of the Alqaseem central concrete mixer for the period (2020-2024)”, Al-Ghary Jour. Eco. Admini. Sci., vol. 21, no. 3, pp. 320–355, Jul. 2026, doi: 10.36325/ghjec.v21i3.19518.