Umar Nirmal, Eric Anton, Poh Kiat Ng, and Chee Wen Chin. “A Review of Modular Ergonomic Furniture Patents”. Journal of Engineering Technology and Applied Physics 3, no. 2 (December 15, 2021): 1–6. Accessed April 25, 2025. https://mmupress.com/index.php/jetap/article/view/240.