MACDONALD, B.; RANJAN, P.; CHIPMAN, H. GPfit: An R Package for Fitting a Gaussian Process Model to Deterministic Simulator Outputs. Journal of Statistical Software, [S. l.], v. 64, n. 12, p. 1–23, 2015. DOI: 10.18637/jss.v064.i12. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v064i12. Acesso em: 26 may. 2022.