O. I. Grabovskii, “Condition number of the matrix of transition to the normal Jordan form”, Ukr. Mat. Zhurn., vol. 51, no. 1, pp. 120–122, Jan. 1999, Accessed: Feb. 17, 2026. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/4589