FENG, D.; TIERNEY, L. Computing and Displaying Isosurfaces in R. Journal of Statistical Software, [S. l.], v. 28, n. 1, p. 1–24, 2008. DOI: 10.18637/jss.v028.i01. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v028i01. Acesso em: 27 may. 2024.