KRAJCI, Vesna. Robustness of model-reference variable structure robot control methods. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 2, n. 2, p. 29–34, 2008. Disponível em: https://www.jamris.org/index.php/JAMRIS/article/view/590. Acesso em: 15 jun. 2025.