KOSTRZ-SIKORA, Paulina. An investigation of rare earth elements in sewage sludge generated in Poland. Geology, Geophysics and Environment, [S. l.], v. 50, n. 4, p. 341–356, 2024. DOI: 10.7494/geol.2024.50.4.341. Disponível em: https://journals.agh.edu.pl/geol/article/view/6510. Acesso em: 15 apr. 2025.