Christopher Aljoeneth S. Cruz, Dante L. Silva, Kevin Lawrence M. de Jesus. “A Multi-Step Feed-Forward Backpropagation Neural Network Model: Predicting Project Cost Overrun Rating Factors on Construction Labor Productivity”. International Journal of Advanced Science and Technology 29, no. 7 (June 1, 2020): 4322-4321. Accessed May 2, 2024. http://sersc.org/journals/index.php/IJAST/article/view/23227.