G. Joseph, Collin, Yen Ling Sharain-Liew, Awang Bono, and Lim Yee Teng. “Photodegradation of Indigo Dye Using TiO2 and TiO2 Zeolite System”. Asian Journal of Chemistry 25, no. 15 (September 10, 2013): 8402–8406. Accessed July 5, 2024. https://asianpubs.org/index.php/ajchem/article/view/25_16_37.