LE, L. T. Passive Friction Compensation Using a Nonlinear Disturbance Observer for Flexible Joint Robots with Joint Torque Measurements. Journal of Computer Science and Cybernetics, [S. l.], v. 35, n. 1, p. 85–103, 2019. DOI: 10.15625/1813-9663/35/1/13147. Disponível em: https://vjs.ac.vn/index.php/jcc/article/view/13147. Acesso em: 3 may. 2024.