FÜLLE, M. J.; LANGE, A.; HAFNER, C. M.; HERWARTZ, H. BEKKs: An R Package for Estimation of Conditional Volatility of Multivariate Time Series. Journal of Statistical Software, [S. l.], v. 111, n. 4, p. 1–34, 2024. DOI: 10.18637/jss.v111.i04. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v111i04. Acesso em: 4 dec. 2024.