What are the Factors that Determine the Number of People Coming to China?. Journal of Nonlinear Modeling and Analysis, [S. l.], v. 1, n. 3, p. 355–366, 2024. DOI: 10.12150/jnma.2019.355. Disponível em: https://www.global-sci.com/index.php/jnma/article/view/13528. Acesso em: 5 dec. 2025.