BERČIČ, Gorazd. OVERVIEW OF RESEARCH STUDIES ON UNDERGROUND COAL GASIFICATION IN SLOVENIA. Journal of Energy Technology, [S. l.], v. 7, n. 1, p. 55–66, 2024. DOI: 10.18690/jet.7.1.55-66.2014. Disponível em: https://journals.um.si/index.php/jet/article/view/3803. Acesso em: 6 dec. 2025.