Talati, J.D., and S.S. Shah. “Some Phenones and Their Derivatives As Indicators for Volumetric Determination of Fe (III) With Diethylenetriamine Pentaacetic Acid”. Asian Journal of Chemistry, vol. 8, no. 3, Mar. 2010, pp. 443-8, https://asianpubs.org/index.php/ajchem/article/view/24088.