Soo-Bin Cho, Hyeon-Jun Kim, Eun-Ji Lee, Soo-Whang Baek. “Implementation of Motor-Based Wearable Knee Rehabilitation Robot System Using 3D Printing”. Mathematical Statistician and Engineering Applications, vol. 71, no. 3, June 2022, pp. 527 -, doi:10.17762/msea.v71i3.191.