BÄCKLUND , L.; TAMMIVAARA-HILTY , RITVA. Gas Exchange in Two Male Age Groups in Relation to Inspiratory Oxygen Fraction, Physical Exercise and Body Posture. Upsala Journal of Medical Sciences, [S. l.], v. 77, n. 2, p. 95–111, 1972. DOI: 10.1517/03009734000000015. Disponível em: https://ujms.net/index.php/ujms/article/view/7458. Acesso em: 12 nov. 2026.