NATHANIEL, B.; A., O. C.; O., A. D.; T., O. S.; A., A. O. Comparative Analysis of Upstream Petroleum Fiscal Systems of Three (3) Petroleum Exporting Countries: Indonesia, Nigeria and Malaysia. International Journal of Sciences: Basic and Applied Research (IJSBAR), [S. l.], v. 15, n. 2, p. 99–115, 2014. Disponível em: https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/2657. Acesso em: 26 jun. 2024.