NASH, J. C. On Best Practice Optimization Methods in R. Journal of Statistical Software, [S. l.], v. 60, n. 2, p. 1–14, 2014. DOI: 10.18637/jss.v060.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v060i02. Acesso em: 4 dec. 2021.