KORI-SIAKPERE, O., K. M. ADAMU, and I. J. OKOBI. “Sublethal Effects of Chromium on Enzymatic Activities of the African Catfish: Clarias Gariepinus (Burchell, 1822)”. Notulae Scientia Biologicae, vol. 4, no. 1, Feb. 2012, pp. 24-30, doi:10.15835/nsb417208.