Comparative study of ozone treatment and magnetic field treatment in the fractionation of organic matter and hydrocarbons in gray water. Journal of Pharmaceutical Negative Results, [S. l.], v. 13, n. 4, p. 10–22, 2022. DOI: 10.47750/pnr.2022.13.04.002. Disponível em: https://pnrjournal.com/index.php/home/article/view/1429.. Acesso em: 5 jun. 2026.