TRAPPENIERS, F. Quelques aspects des comparaisons internationales de données statistiques globales. JORBEL - Belgian Journal of Operations Research, Statistics, and Computer Science, [S. l.], v. 3, n. 1, p. 3–22, 1962. Disponível em: https://www.orbel.be/jorbel/index.php/jorbel/article/view/519. Acesso em: 25 apr. 2024.