“Study the Affecting Factors on Free Overfall Flow and Bed Roughness in Semi-Circular Channels by Artificial Neural Network: Neural Network”. Tikrit Journal of Engineering Sciences 29, no. 4 (December 25, 2022): 69–78. Accessed September 10, 2026. https://www.tj-es.com/ojs/index.php/tjes/article/view/864.