Rossi, A. V. and Tubino, M. (2003) “About the kinetics and mechanism of the reactions of 4-(2-pyridylazo) resorcinol, with Zn2+, Cu2+ and Zn2+ +Cu2+ equimolar mixtures, in aqueous solutions”, Eclética Química, 28(1), pp. 55–62. doi: 10.26850/1678-4618eqj.v28.1.2003.p55-62.