New Formulas of Special Singular Matrices. Baghdad Science Journal, Iraq, Baghdad, v. 6, n. 2, p. 405–409, 2009. DOI: 10.21123/bsj.2009.6.2.405-409. Disponível em: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/997.. Acesso em: 4 jul. 2024.