Patel, A.J., et al. “RP-UPLC Stability Indicating Assay Method for Simultaneous Estimation of Dextromethorphan Hydrobromide and Chlorpheniramine Maleate in Tablet Dosage Form”. Asian Journal of Organic & Medicinal Chemistry, vol. 5, no. 3, Sept. 2020, pp. 192-6, doi:10.14233/ajomc.2020.AJOMC-P269.