DEMIREL OZEL, AYCA, and ESMA KILIC. 2010. “Electrochemical Investigation of 4-[(2-Hydroxy-1- naphthyl)azo]benzenesulfonic Acid Sodium Salt (Orange II) at Glassy Carbon Electrode”. Asian Journal of Chemistry 20 (2):1609-20. https://asianpubs.org/index.php/ajchem/article/view/12583.