BIELOWICZ, Barbara; CHUCHRO, Monika. Relationship between the content of selected metals in coal and the chemical composition of ash. Economics and Environment, Poland, v. 98, n. 3, p. 1222, 2026. DOI: 10.34659/eis.2026.98.3.1222. Disponível em: https://ekonomiaisrodowisko.pl/journal/article/view/1222. Acesso em: 13 oct. 2026.