RomanivA. M. “Elementary Reduction of Matrices over Right 2-Euclidean Rings”. Ukrains’kyi Matematychnyi Zhurnal 56, no. 12 (December 25, 2004): 1717 -. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3879.