NASHWAN, Imad. Reliability and failure functions of some weighted systems. International Journal of Applied Mathematical Research, [S. l.], v. 6, n. 1, p. 7–13, 2017. DOI: 10.14419/ijamr.v6i1.6917. Disponível em: https://sciencepubco.com/index.php/ijamr/article/view/6917.. Acesso em: 12 apr. 2025.