Kaczorek , Tadeusz, and Kamil Borawski. “Structurally R-Controllable and Structurally R-Observable Descriptor Linear Electrical Circuits”. Journal of Automation, Mobile Robotics and Intelligent Systems 15, no. 3 (May 21, 2022): 81–86. Accessed May 6, 2024. https://www.jamris.org/index.php/JAMRIS/article/view/788.