Abdul-razaaq Jamal, A., Ysseen Tahaa, K., & Abd Al-Majeed Hayawi, G. (2022). Experimental Study of Scour Downstream Piano Key Weir Type C with Changing Height of Weir Width of Keys and Apron Solid. Al-Rafidain Engineering Journal (AREJ), 27(1), 193–204. https://doi.org/10.33899/rengj.2021.130402.1101