KHIN, A. A.; CHAU, W. H.; YEAN, U. L.; KEONG, O. C.; LEH BIN, R. L. Examining between Exchange Rate Volatility and Natural Rubber Prices: Engle-Granger Causality Test. International Journal of Economics and Financial Issues, [S. l.], v. 7, n. 6, p. 33–40, 2017. Disponível em: https://www.econjournals.com/index.php/ijefi/article/view/5572. Acesso em: 26 may. 2022.