PEÑA, D.; SMUCLER, E.; YOHAI, V. J. gdpc: An R Package for Generalized Dynamic Principal Components. Journal of Statistical Software, Code Snippets, [S. l.], v. 92, n. 2, p. 1–23, 2020. DOI: 10.18637/jss.v092.c02. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v092c02. Acesso em: 4 dec. 2021.