MEENAKSHI, A.; KRISHNASWAMY, D. Principal pivot transforms of range symmetric matrices in Minkowski space. Tamkang Journal of Mathematics, [S. l.], v. 37, n. 3, p. 211-219, 2006. DOI: 10.5556/j.tkjm.37.2006.166. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/166. Acesso em: 19 oct. 2021.