K. Shaakir, Laith, Akram S. Mohamed, and Nazar K. Hussein. “Some Algebraic and Analytical Properties of Special Matrices”. AL-Rafidain Journal of Computer Sciences and Mathematics 8, no. 2 (December 8, 2011): 61–73. Accessed December 18, 2025. https://csmj.uomosul.edu.iq/index.php/csmj/article/view/36635.