SaeedM., RasoolM. H., RasheedF., SaqaleinM., NisarM. A., ImranA. A., TariqS., AmirA., IkramA., and KhurshidM. “Extended-Spectrum Beta-Lactamases Producing Extensively Drug-Resistant Salmonella Typhi in Punjab, Pakistan”. The Journal of Infection in Developing Countries, Vol. 14, no. 02, Feb. 2020, pp. 169-76, doi:10.3855/jidc.12049.