Naser, H. M., N. Shil, N. Mahmud, M. Rashid, and K. Hossain. “Lead, Cadmium and Nickel Contents of Vegetables Grown in Industrially Polluted and Non-Polluted Areas of Bangladesh”. Bangladesh Journal of Agricultural Research, vol. 34, no. 4, Aug. 2010, pp. 545-54, doi:10.3329/bjar.v34i4.5831.