MOHAMED, I. S.; KHTTAB, H. M.; ELSAYED, S. K.; EL-NOBY, M. G.; ELRAMMAH, S. G. A New Progressive and Efficient Royalty Model for Upstream Petroleum Industry. International Journal of Energy Economics and Policy, [S. l.], v. 12, n. 3, p. 287–297, 2022. DOI: 10.32479/ijeep.13153. Disponível em: https://www.econjournals.com/index.php/ijeep/article/view/13153. Acesso em: 6 dec. 2022.