The Influence of the Regional and Income Classification  Variation on the Background Parameters of Peace Index Score. International Journal of Innovative Research in Engineering & Management, [S. l.], v. 10, n. 6, p. 1–10, 2023. Disponível em: https://www.journals.acspublisher.com/index.php/ijirem/article/view/12218. Acesso em: 3 aug. 2025.