1. Evaluating flutter device and the active cycle of breathing technique in non-cystic bronchiectasis. The prospective randomised study;Altiay;European Respiratory Journal,2012
2. A study of the conventional chest physiotherapy versus Flutter VRP1 in the treatment of patients carrying bronchiectasis;Oliveira Antunes;Salusvita,2001
3. A randomised evaluation of the acute efficacy, acceptability and tolerability of Flutter and active cycle of breathing with and without postural drainage in non-cystic fibrosis bronchiectasis;Eaton;Chronic Respiratory Disease,2007
4. Effects of ELTGOL and Flutter VRP1 on the dynamic and static pulmonary volumes and on the secretion clearance of patients with bronchiectasis;Guimaraes;Revista Brasileira de Fisioterapia,2012
5. NCT01300403 Physiological effects of expiration with the glottis open in lateral posture (ELTGOL) and flutter valve in patients with bronchiectasis clinicaltrials.gov/show/NCT01300403