Ahsan, Chowdhury Rafiqul, et al. “Environmental Factors Regulate the HlyE Gene Expression in Both S. Typhi and E. Coli in a Similar Way to Display Haemolytic Activity”. Bangladesh Medical Research Council Bulletin, vol. 42, no. 1, Mar. 2017, pp. 33-38, doi:10.3329/bmrcb.v42i1.32001.