Vijayvergia, V, et al. “Phenotypic Detection of Extended Spectrum Beta-Lactamases and Amp C Beta- Lactamases Among Nosocomial Isolates in a Tertiary Care Hospital”. Bangladesh Journal of Medical Science, vol. 12, no. 4, Oct. 2013, pp. 378-84, doi:10.3329/bjms.v12i4.13309.