Venkateshwar Rao, J., and M. Sarangapani. 2010. “Synthesis and Evaluation of Some New Isatin Hydrazones for Their Antibacterial, Antioxidant and Cytotoxic Activities”. Asian Journal of Chemistry 20 (7):5331-35. https://asianpubs.org/index.php/ajchem/article/view/12951.