Sinaga JB, M. Irsyad, Ahmad Yonanda, Gusri Akhyar Ibrahim, David Sinaga, Tri Topan. The Effects of Blade Height on the Efficiency of Gravitational Water Vortex Turbine. etj [Internet]. 2024 Apr. 5 [cited 2024 May 19];9(4):3717-21. Available from: http://www.everant.org/index.php/etj/article/view/1236