Dzhaliuk , N. S., and V. M. Petrychkovych. “Equivalence of Matrices in the Ring $M(n, R)$ and Its Subrings”.
Ukrains’kyi Matematychnyi Zhurnal 73, no. 12 (December 17, 2021): 1612–1618. Accessed April 27, 2025.
https://umj.imath.kiev.ua/index.php/umj/article/view/6858.