Venkataraman, R., and P.S. Raghavan. “Permanganate-Oxalic Acid Reaction: Autocatalytic Suppression in Surfactant Media ”. Asian Journal of Chemistry, vol. 13, no. 3, Mar. 2010, pp. 1225-6, https://asianpubs.org/index.php/ajchem/article/view/22767.