1.To DAK, Chau HP, Nguyen VL. Design of a variable stiffness actuator based on a multi-pulley system with a spring. Vietnam J. Mech. [Internet]. 2024 Sep. 30 [cited 2025 Nov. 8];46(3):229-3. Available from: https://vjmech.vast.vn/vjmech/article/view/21024