AMAEFULA, C. G. A Simple Integration Order Test: An Alternative to Unit Root Testing. European Journal of Mathematics and Statistics, [S. l.], v. 2, n. 3, p. 77–85, 2021. DOI: 10.24018/ejmath.2021.2.3.22. Disponível em: https://ej-math.org/index.php/ejmath/article/view/22. Acesso em: 21 apr. 2025.