Arini, N. R., Gilang Muhammad, Joke Pratilastiarso and Setyo Nugroho (2022) “Numerical Study of a Wind Turbine Blade Modification Using 30° Angle Winglet on Clark Y Foil ”, EMITTER International Journal of Engineering Technology, 10(2), pp. 311-319. doi: 10.24003/emitter.v10i2.680.