Bovdi, V., and V. Shchedryk. “Adequacy of Nonsingular Matrices over Commutative Principal Ideal Domains”. Carpathian Mathematical Publications 18, no. 1 (June 26, 2026): 236–249. Accessed July 11, 2026. https://journals.pnu.edu.ua/index.php/cmp/article/view/9225.