ETUK, E. H. . Seasonal Arima Modelling of Nigerian Monthly Crude Oil Prices. Asian Economic and Financial Review , [S. l.], v. 3, n. 3, p. 333–340, 2013. Disponível em: https://archive.aessweb.com/index.php/5002/article/view/996. Acesso em: 22 nov. 2024.