Unbiased Grey Polynomial Model Based on Precise Direct Integration Method. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 6, n. 3, p. 643–668, 2024. DOI: 10.12150/jnma.2024.643. Disponível em: https://global-sci.com/index.php/jnma/article/view/13757. Acesso em: 5 dec. 2025.