S. M. Rančić, S. D. Nikolić-Mandić, A. L. Bojić, S. M. Đorić-Veljković, A. R. Zarubica, and P. L. Janković, “Application of the reaction system methylene blue B–(NH4)2S2O8 for the kinetic spectrophotometric determination of palladium in citric buffer media”, Hem Ind, vol. 71, no. 2, pp. 97–104, May 2017, doi: 10.2298/HEMIND140821080R.