Crupkin, A. C., and M. L. Menone. “Changes in the Activities of Glutathione-S-Transferases, Glutathione Reductase and Catalase After Exposure to Different Concentrations of Cadmium in Australoheros Facetus (Cichlidae, Pisces)”. Ecotoxicology and Environmental Contamination, vol. 8, no. 1, June 2013, pp. 21-25, doi:10.5132/eec.2013.01.003.