JAIWAL, N. K.; JAIN, H. C. A priority problem in queuing theory. Defence Science Journal, [S. l.], v. 9, n. 2, p. 132–138, 2014. DOI: 10.14429/dsj.9.7620. Disponível em: https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/7620. Acesso em: 16 jun. 2025.