Rashid, Q., and Ruwaida Farman Salih. “Spectrophotometric Determination of Valsartan in Pure Form and in Its Pharmaceutical Preparations ”. Al-Qadisiyah Journal of Pure Science, Vol. 26, no. 4, July 2021, pp. 239–246, doi:10.29350/qjps.2021.26.4.1317.