Ozone concentration measurements. State of the art. Ozone Therapy Global Journal, [S. l.], v. 1, n. 1, p. 87–92, 2011. DOI: 10.67442/rqyq9738. Disponível em: https://journal.ozonetherapyglobaljournal.es/index.php/otgj/article/view/250. Acesso em: 23 aug. 2026.