Suriya Senthil ,Vimal Raj R,Balaji Balu ,Pajanivel Ranganadin,Prabakaran T, “ASSESSMENT OF AIRWAVE OSCILLOMETRY AND ITS CORRELATION WITH SPIROMETRY AND HRCT THORAX FINDINGS AMONG COPD PATIENTS ”, IJPRT, vol. 16, no. 2, pp. 2925–2942, Aug. 2026.