PEBESMA, E. spacetime: Spatio-Temporal Data in R. Journal of Statistical Software, [S. l.], v. 51, n. 7, p. 1–30, 2012. DOI: 10.18637/jss.v051.i07. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v051i07. Acesso em: 5 oct. 2022.