Xu Y, Liu J. New solution bounds for unified algebraic Lyapunov equation and robust stability in delta operator system. Bull. Pol. Acad. Sci. Tech. Sci. [Internet]. 2026 Apr. 30 [cited 2026 Aug. 16];74(3):e157569. Available from: https://wydawnictwo.pan.pl/index.php/bpasts/article/view/1352