V. Koehuan, L. Nogur, and J. Jasron, “Studi Eksperimental Variasi Sudut Blade terhadap Kinerja Rotor Blade Turbin Angin Tipe Propeler Poros Horizontal Model Contra Rotating”, LJTMU, vol. 1, no. 2, pp. 72-81, Dec. 2018.