DREGER, M. Changes in the methane emissions and hard coal output in the Brzeszcze mine (the Upper Silesian Coal Basin, Poland). Geology, Geophysics and Environment, [S. l.], v. 46, n. 2, p. 159, 2020. DOI: 10.7494/geol.2020.46.2.159. Disponível em: https://journals.agh.edu.pl/geol/article/view/3722. Acesso em: 10 may. 2024.