TEGHEM, J. De l’optimum économique dans les problèmes de files d’attente. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science, [S. l.], v. 6, n. 2, p. 3–25, 1965. Disponível em: https://www.orbel.be/jorbel/index.php/jorbel/article/view/48. Acesso em: 1 may. 2024.