Chen, Fu-Chen, Yih-Fong Tzeng, and Meng-Hui Hsu. “Innovative Design of an Elliptical Trainer With Right Timing of the Foot Trajectory”. Advances in Technology Innovation 5, no. 3 (July 1, 2020): 190–201. Accessed December 4, 2024. https://ojs.imeti.org/index.php/AITI/article/view/5645.