Hammoody, Oday, et al. “FORECASTING AND DETERMINING OF COST PERFORMANCE INDEX OF TUNNELS PROJECTS USING ARTIFICIAL NEURAL NETWORKS ”. International Journal for Computational Civil and Structural Engineering, vol. 18, no. 1, Mar. 2022, pp. 51-60, doi:10.22337/2587-9618-2022-18-1-51-60.