Xu, S. Z., J. L. Chen, and J. Benítez. “Partial Orders Based on the CS Decomposition”. Ukrains’kyi Matematychnyi Zhurnal 72, no. 8 (August 18, 2020): 1119–1133. Accessed December 9, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/6025.