Busari, A., Idris, S.O., and Iyun, J.F. “Kinetics and Mechanism of the Oxidation of 3,7-Bis(dimethylamino) Phenothionium Chloride (Methylene Blue) by Bromate Ion in Aqueous Hydrochloric Acid Medium”. International Journal of Science for Global Sustainability, vol. 2, no. 3, Sept. 2016, p. 8, http://www.fugus-ijsgs.com.ng/index.php/ijsgs/article/view/230.