JOARDER, A. H.; OMAR, M. H. Exact distribution of the sum of two correlated chi-square variables and its application. Kuwait Journal of Science, [S. l.], v. 40, n. 2, 2013. Disponível em: https://journalskuwait.org/kjs/index.php/KJS/article/view/117. Acesso em: 19 apr. 2026.