Liqin, Qu, Yu Xinxiao, Xiao Juan, and Lei Tingwu. 2010. “Development and Experimental Verification of a Mathematical Expression for the Discharge Rate of a Semi-Circular Open Channel”. International Journal of Agricultural and Biological Engineering 3 (3):19-26. https://www.ijabe.migration.pkpps06.publicknowledgeproject.org/index.php/ijabe/article/view/159.