SALISU, M. M.; MUHAMMAD, L. J.; LAMINU, I.; ALIYU, U. M. Modelling and Economic Analysis of a Simple Repairable System with Constant Failure and Repairs . International Journal of Science for Global Sustainability, [S. l.], v. 6, n. 3, p. 8, 2020. DOI: 10.57233/ijsgs.v6i3.16. Disponível em: https://www.fugus-ijsgs.com.ng/index.php/ijsgs/article/view/95. Acesso em: 25 jun. 2026.