Mitteregger-Júnior, Horst, J. Ferraz-Dias, M. Lúcia-Yonema, A. Arenzon, J. Silva, and J. A. Pegas-Henriques. 2006. “Evaluation of Toxic and Genotoxic Water and Sediment Activities in Estância Velha Stream – Leather and Footwear Industry Region – Using Allium Cepa”. Ecotoxicology and Environmental Contamination 1 (2):147-51. https://doi.org/10.5132/jbse.2006.02.011.