Sakti, G. and Yuwono, T. (2025) “Performance Study of Installed an I-65o Type Cylinder at The Upstream of Returning Blade of Savonius Wind Turbine, Comparison With Conventional Savonius Wind Turbine”, IPTEK The Journal for Technology and Science, 30(2), pp. 56–59. doi: 10.12962/j20882033.v30i2.4341.