DAVIES, T. M.; BRYANT, D. On Circulant Embedding for Gaussian Random Fields in R. Journal of Statistical Software, [S. l.], v. 55, n. 9, p. 1–21, 2013. DOI: 10.18637/jss.v055.i09. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v055i09. Acesso em: 30 nov. 2022.