Application of Queueing Theory at Super Market Checkout Points. International Journal of Advance Engineering and Research Development (IJAERD), [S. l.], v. 5, n. 1, p. 480–482, 2018. Disponível em: https://www.ijaerd.org/index.php/IJAERD/article/view/2093. Acesso em: 10 sep. 2025.