Sonawane, V.Y., et al. “Kinetics and Mechanism of Oxidation of 1-Phenyl Ethyl Alcohol by Polymer Supported Chromic Acid”. Asian Journal of Chemistry, vol. 17, no. 2, Jan. 2016, pp. 1226-30, https://asianpubs.org/index.php/ajchem/article/view/14245.