Duong Dinh, C. et al. 2020. RP-HPLC Method for Determination of Salbutamol and Bromhexine in Syrup: Modelling and Optimization by Response Surface Methodology. Asian Journal of Chemistry. 32, 12 (Dec. 2020), 3135–3143. DOI:https://doi.org/10.14233/ajchem.2020.22635.