Review of the latest research on coal, environment, and clean technologies. Rudarsko-geološko-naftni zbornik, [S. l.], v. 33, n. 3, p. 13–21, 2018. DOI: 10.17794/rgn.2018.3.2. Disponível em: https://ojs.srce.hr/index.php/rgn/article/view/6098. Acesso em: 6 oct. 2025.