REMBEZA, J. Coal Prices in Poland: Is the Domestic Market Separated from the International Market?. International Journal of Energy Economics and Policy, [S. l.], v. 10, n. 4, p. 405–410, 2020. Disponível em: https://econjournals.com/index.php/ijeep/article/view/9393. Acesso em: 27 apr. 2024.