EDWARDS, Paul; THERRIAULT, Patricia-Ann; KATZ, Ira. Onsite production of medical air: is purity a problem?. Multidisciplinary Respiratory Medicine, [S. l.], v. 13, n. 1, 2019. DOI: 10.4081/mrm.2018.131. Disponível em: https://mrmjournal.org/index.php/mrm/article/view/131.. Acesso em: 7 jul. 2024.