Sahu, G.P., and S.C. Lavale. 2010. “Bromopyrogallol Red: A New Microanalytical Reagent for Amperometric Estimation of Dy(III) and Gd(III)&Dagger”;. Asian Journal of Chemistry 12 (1):203-6. https://asianpubs.org/index.php/ajchem/article/view/22905.