An Alternative Method of Detecting Outlier in Multivariate Data using Covariance Matrix. Global Journal of Science Frontier Research, [S. l.], v. 19, n. F4, p. 37–48, 2019. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/2561. Acesso em: 14 aug. 2026.