Rhaly Jr., H. C. RHALY JR. “Hyponormality-Preserving Finite Rank Perturbations Of Terraced Matrices”. Journal of the Nigerian Mathematical Society 32, no. 1-3 (April 8, 2021): 281–288. Accessed April 30, 2024. https://ojs.ictp.it/jnms/index.php/jnms/article/view/699.