GAGOLEWSKI, M. stringi: Fast and Portable Character String Processing in R. Journal of Statistical Software, [S. l.], v. 103, n. 2, p. 1–59, 2022. DOI: 10.18637/jss.v103.i02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v103i02. Acesso em: 15 aug. 2022.