HAMRLA, M. Contribution to the geology of coal deposits in the Zreče area and reflectance-based ranking of its coals. Geologija, [S. l.], v. 30, n. 1, p. 343–390, 1987. Disponível em: https://www.geologija-revija.si/index.php/geologija/article/view/598. Acesso em: 23 apr. 2024.