BondarenkoV. M., and BortosM. Y. “Indecomposable and Isomorphic Objects in the Category of monomial Matrices over a Local Ring”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 69, no. 7, July 2017, pp. 889-04, https://umj.imath.kiev.ua/index.php/umj/article/view/1744.