ZHU, J.; PAN, W.; ZHENG, W.; WANG, X. Ball: An R Package for Detecting Distribution Difference and Association in Metric Spaces. Journal of Statistical Software, [S. l.], v. 97, n. 6, p. 1–31, 2021. DOI: 10.18637/jss.v097.i06. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v097i06. Acesso em: 26 apr. 2024.