Muthukumar, T. ., A. . Ramachandran, A. . V, G. . Baldha, and A. . Duraisamy. “Effects Of Chest Wall Mobilization Exercises To Improve The Respiratory Functions In Severe Copd Patients”. Journal of Neonatal Surgery, vol. 14, no. 13S, July 2025, pp. 1336-40, https://www.jneonatalsurg.com/index.php/jns/article/view/8333.