Kiran Kumar A; Balakrishnan M; Chandrasekhar Kothapalli Bannoth. Reverse Phase-UPLC Method of Analysis for Simultaneous Estimation of Levosalbutamol Sulphate, Guaiphenesin and Ambroxol Hydrochloride in Pharmaceutical Cough, Cold Liquid Dosage Forms. Int. J. Res. Pharm. Sci. 2019, 10, 927-934.