Reliability Exponential Distribution (1+3) Cascade Model . Samarra Journal of Pure and Applied Science, [S. l.], v. 8, n. 1, p. 294–302, 2026. DOI: 10.54153/sjpas.2026.v8i1.1264. Disponível em: https://www.sjpas.com/index.php/sjpas/article/view/1264. Acesso em: 15 apr. 2026.