Melly Lukman, Benyamin Tanan, Zubair Saing. “Sediment Yields Determination of Existing Bilibili Reservoir Using Echosounder Data Analysis”. International Journal of Advanced Science and Technology, Vol. 29, no. 05, Apr. 2020, pp. 3652 -59, http://sersc.org/journals/index.php/IJAST/article/view/12254.