Krishna Prasad, K.M.M., and K.P. Subhashchandan. 2010. “Silver Ion Catalysed Oxidation of Phenosafranine by Peroxodisulphate- Catalytic Kinetic Determination of Micro Amounts of Silver ”. Asian Journal of Chemistry 4 (4):715-25. https://asianpubs.org/index.php/ajchem/article/view/25139.