Saxena, Shivani, et al. “ESBL, MBL AND AMP C-β LACTAMASES PRODUCED BY SUPERBUGS: AN EMERGING THREAT TO CLINICAL THERAPEUTICS”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 7, no. 9, Sept. 2015, pp. 353-6, https://www.journals.innovareacademics.in/index.php/ijpps/article/view/7313.