R SATYANARAYANA MURTHY, et al. “Rp-Hplc Method Development, Validation for Quantification of Paracetamol and Ibuprofen and Its Related Impurities in Solid Dosage Form”. International Journal of Pharma and Bio Sciences, vol. 8, no. 4, Dec. 2017, pp. 152-68, doi:10.22376/ijpbs.2017.8.4.p152-168.