Kiran, Mayuresh, and Lalit Pawaskar. “An Open-Labeled, Multicentric, Clinical Trial to Substantiate the Safety and Efficacy for the Combination of Salbutamol, Etofylline and Bromhexine in the Treatment of COPD”. International Journal of Innovative Research in Medical Science 3, no. 03 (April 25, 2018): 1869 to 1875. Accessed May 4, 2024. https://ijirms.in/index.php/ijirms/article/view/337.