Won Kim, Jae, Jae Ung Cho, Chan Ki Cho, and Jin Oh Kim. “A Study on Damage to Mechanical Seat Cushion Made from Different Materials of Extension Frame”. International Journal of Engineering & Technology 7, no. 2.33 (June 8, 2018): 315–318. Accessed November 21, 2024. https://sciencepubco.com/index.php/ijet/article/view/14176.