Widowati, Widowati, Bambang Riyanto, and Roberd Saragih. “Controller Reduction of Parameter Dependent Systems”. Journal of Engineering and Technological Sciences 36, no. 1 (December 31, 2013): 43-56. Accessed January 18, 2026. https://journals.itb.ac.id/index.php/jets/article/view/314.