- Humenberger et al. BMC Pulmonary Medicine (2018) 18:163
- GOLD Global Strategy for the Diagnosis, Management and Prevention of COPD 2023. https://goldcopd.org/2023-gold-report-2/
- Wiśniewski et al, Pneumonol Alergol Pol 2014;82(2):96-104
- Navarrete MD et al, Chest. 2022 Nov;162(5):1017-1029.
- Bettoncelli G. Importanza del device nella terapia inalatoria dell’asma e della BPCO. Rivista Società Italiana di Medicina Generale (2016)