Mehri, Yaser, Jaber Soltani, Mojtaba Saneie, and Mohhamad Rostami. 2018. “Discharge Coefficient of a C-Type Piano Key Side Weir at 30° and 120° Sections of a Curved Channel”. Civil Engineering Journal 4 (7):1702-13. https://doi.org/10.28991/cej-03091106.