KACZOREK, Tadeusz. State variables diagram method for determination of positive realizations of 2D systems with delays. Journal of Automation, Mobile Robotics and Intelligent Systems, [S. l.], v. 1, n. 2, p. 5–12, 2013. Disponível em: https://jamris.d.tomp.pl/index.php/JAMRIS/article/view/191. Acesso em: 16 may. 2025.