KUMAR, A.; KAPOOR, V. B.; RAY, D. On Availability of a Series system with Imperfect Detectors. Defence Science Journal, [S. l.], v. 32, n. 3, p. 237–240, 2014. DOI: 10.14429/dsj.32.6304. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/6304. Acesso em: 15 jun. 2025.