M. I. El-Deeb, M. H. Kotb, and I. A. Rashid, “Gray Multi-Criteria Decision-Making Model for Optimization of Cost for Sustainable Design and Construction Using Value Engineering”, ZKDX, vol. 30, no. 3, pp. 63–75, Sep. 2025, Accessed: Oct. 15, 2025. [Online]. Available: https://zkdx.ch/journal/zkdx/article/view/352