R SATYANARAYANA MURTHY, HANIMI REDDY BAPATU, MARAM RAVI KUMAR B, and JOY SUNANDAN B, “Rp-hplc method development, validation for quantification of paracetamol and ibuprofen and its related impurities in solid dosage form”, ijpbs, vol. 8, no. 4, pp. 152–168, Dec. 2017.