EL-HADY, H. M. Abd; GRÜNWALD, A.; VLČKOVÁ, K.; ZEITHAMMEROVÁ, J. Clinoptilolite in Drinking Water Treatment for Ammonia Removal. Acta Polytechnica, Prague, Czech Republic, v. 41, n. 1, 2001. DOI: 10.14311/192. Disponível em: https://ojs.cvut.cz/ojs/index.php/ap/article/view/192. Acesso em: 22 jan. 2025.