I. K. Jahid, T. Azad, M. Z. Rahman, A. Begum, S. I. Khan, and H. Akhter, “Survival study of escherichia coli o157:h7 in aquatic system of Bangladesh”, Dhaka Univ. J. Biol. Sci, vol. 19, no. 2, pp. 195–201, Nov. 2011.