LANGFELDER, P.; HORVATH, S. Fast R Functions for Robust Correlations and Hierarchical Clustering. Journal of Statistical Software, [S. l.], v. 46, n. 11, p. 1–17, 2012. DOI: 10.18637/jss.v046.i11. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v046i11. Acesso em: 10 aug. 2022.