Shavarovskyy, B. Z. “On Semiscalar and Quasidiagonal Equivalences of Matrices”. Ukrains’kyi Matematychnyi Zhurnal 52, no. 10 (October 25, 2000): 1435–1440. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/4550.