Pandeya, S., Singh, B., Shukla, S., & Singh, M. (2010). Synthesis and Antimicrobial Activity of N-Norfloxacin Mannich Bases of Isatin and Its Derivatives. Asian Journal of Chemistry, 20(7), 5377–5382. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/12868