Hussain, A. F., Dawood, A. H., & Kadhier, A. F. (2011). New Method of Synthesis of Calix-4-arenes as Analytical Reagent for Spectrophotometric Determination of Iron (III). Al Mustansiriyah Journal of Pharmaceutical Sciences, 10(2), 19–33. https://doi.org/10.32947/ajps.v10i2.293