Bora, A., Ahmed, G. and Hazarika, N. (2013) “Phenotypic detection of extended spectrum ?-lactamase and AmpC ?-lactamase in urinary isolates of Escherichia coli at a tertiary care referral hospital in Northeast India”, Journal of College of Medical Sciences-Nepal, 8(3), pp. 22–29. doi: 10.3126/jcmsn.v8i3.8682.