Sahu, L.K., S. Si, J.K. Gupta, and S.K. Patro. 2016. “Concurrent Spectrophotometric Assay of Amoxycillin and Ambroxol from Combination Tablets”. Asian Journal of Chemistry 17 (3):1545-49. https://asianpubs.org/index.php/ajchem/article/view/14030.