R. S. Lubis, T. Muhayatsyah, M. Syukri, R. H. Siregar, and S. M. Jalil, “Small-Scale Wind Power Generator with Inverse Taper and Taper Type Blades at Low Wind Speed”, jes, vol. 4, no. 1, pp. 27–47, Jun. 2025, doi: 10.56347/jes.v4i1.275.