WICKHAM, H.; COOK, D.; HOFMANN, H.; BUJA, A. tourr: An R Package for Exploring Multivariate Data with Projections. Journal of Statistical Software, [S. l.], v. 40, n. 2, p. 1–18, 2011. DOI: 10.18637/jss.v040.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v040i02. Acesso em: 30 sep. 2022.