“Synthesis of Azo-Bridged Benzothiazole-Phenyl Ester Derivatives via Steglich Esterification”. International Journal of Current Engineering and Technology 4, no. 4 (August 31, 2014): 2711–2715. Accessed April 11, 2026. https://ijcet.evegenis.org/index.php/ijcet/article/view/1116.