Bolawa, O. E., and A. F. A.A. Yusuff. “DETERMINATION OF HEAVY METALS IN IMPORTED FROZEN FISH AND LOCAL FRESH FISH OBTAINED FROM DIFFERENT MARKETS IN LAGOS STATE, NIGERIA”. UNILAG Journal of Medicine, Science and Technology, Vol. 6, no. 1, May 2019, pp. 33-44, http://ujmst.unilag.edu.ng/article/view/363.