R. Chourey, Vijay, et al. “Kinetics of Oxidation Deamination and Decarboxylation of DL-Leucine by Acidic Permanganate in Presence of Silver Ion ”. Asian Journal of Chemistry, vol. 9, no. 3, Mar. 2010, pp. 435-41, https://asianpubs.org/index.php/ajchem/article/view/23896.