U. RIZWAN; SYED TAHIR HUSSAINY. Relationship Among Bivariate Ageing Classes. International Journal of Mathematics And its Applications, [S. l.], v. 4, n. 1 - A, p. 23–32, 2016. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/542. Acesso em: 22 jul. 2024.