ZAPUŠEK, Alenka; BERČIČ, Gorazd; ZAVŠEK, Simon; GOLOB , Ludvik; VEBER , Igor; KONOVŠEK, Damjan. UNDERGROUND COAL GASIFICATION (UCG) – THE VELENJE COAL MINE EXPERIENCE. Journal of Energy Technology, [S. l.], v. 4, n. 1, p. 61–76, 2024. DOI: 10.18690/jet.4.1.61-76.2011. Disponível em: https://journals.um.si/index.php/jet/article/view/4310. Acesso em: 6 dec. 2025.