Lee, Soo-Han, Jeong-Eun Han, Do-Hun Kim, and Sang-Hyun Kim. “A Feasibility Study of Variable Linkage Mechanisms for Adjustable Table Fans With Selective Rotation Angles”. International Journal of Engineering and Technology 8, no. 1.4 (January 2, 2019): 292–300. Accessed May 19, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/25241.