ANYIN, P. B. .; ETIKA, A. A. . Analytical determination of queueing system performance for sustainable economic development. Arid Zone Journal of Engineering, Technology and Environment, [S. l.], v. 18, n. 3, p. 517–526, 2023. Disponível em: https://www.ajol.info/index.php/azojete/article/view/239753. Acesso em: 4 oct. 2026.