N.K.ZAHIRA, & P.N.PRESANNAKUMARAN. (2018). Application of three novel ratio difference spectrophotometric methods for the simultaneous estimation of zaltoprofen and paracetamol in combined dosage form. International Journal of Pharma and Bio Sciences, 9(3), 1–12. https://doi.org/10.22376/ijpbs.2018.9.3.p1-12