POLC, R.; JURKOVIČ, Ľubomír. Grain size and leaching test analysis of fl y ash from sludge incinerator. Geology, Geophysics and Environment, [S. l.], v. 41, n. 1, p. 123, 2015. DOI: 10.7494/geol.2015.41.1.123. Disponível em: https://ggae.agh.edu.pl/index.php/geol/article/view/1427. Acesso em: 18 jan. 2025.