BOUDT, K.; KLEEN, O.; SJØRUP, E. Analyzing Intraday Financial Data in R: The highfrequency Package. Journal of Statistical Software, [S. l.], v. 104, n. 1, p. 1–36, 2022. DOI: 10.18637/jss.v104.i08. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v104i08. Acesso em: 10 dec. 2022.