PAWELEC, S. Economic parameters and quality assessment of lignite from the Szczerców deposit (central Poland). Geology, Geophysics and Environment, [S. l.], v. 42, n. 4, p. 459, 2017. DOI: 10.7494/geol.2016.42.4.459. Disponível em: https://ggae.agh.edu.pl/index.php/geol/article/view/2061. Acesso em: 3 dec. 2024.