John S. Lanuza, Elymer, Michael C. Pacis, Ronald Vincent Santiago, and Gorgonio S. Vallestero II. “Comparison of Energy Output of Multi-Angle Positioned Windmill Propeller Blades”. International Journal of Engineering and Technology 7, no. 4.38 (March 1, 2026): 1666–1668. Accessed March 27, 2026. https://www.sciencepubco.com/index.php/IJET/article/view/29229.