DE LEEUW, J.; MAIR, P. Multidimensional Scaling Using Majorization: SMACOF in R. Journal of Statistical Software, [S. l.], v. 31, n. 3, p. 1–30, 2009. DOI: 10.18637/jss.v031.i03. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v031i03. Acesso em: 21 feb. 2024.