1. Agency for Toxic Substances and Disease Registry (ATSDR). (2004). Toxicological profile for copper. Department of Health and Human Services, Public Health Service, Atlanta.
2. Agusa, T., Nomura, K., Kunito, T., Anan, Y., Iwata, H., Miyazaki, N., & Tanabe, S. (2008). Interelement relationships and age-related variation of trace element concentrations in liver of striped dolphins (Stenella coeruleoalba) from Japanese coastal waters. Marine pollution bulletin, 57(6–12), 807–815.
3. Andrade, C. M. D., Gomes, C. T. D. S., Aragão, N. K. C. V., Silva, E. M., & Lira, G. A. D. S. T. D. (2009). Structure of the phytoplankton community with emphasis on Cyanobacteria in Tapacurá reservoir-PE. Revista do Instituto Adolfo Lutz (Impresso), 68(1), 109–117.
4. Aprile, F. P., & Bouvy, M. (2003). Dynamic of the heavy metals in the waters and surficial sediments at Tapacurá River, Pernambuco State, Brazil (in Portuguese). Revista Química & Tecnologia., 1, 7–14.
5. Aprile, F. M., & Bouvy, M. (2010). Heavy metal levels in surface waters from a tropical river basin, Pernambuco State, northeastern Brazil. Acta Scientiarum. Biological Sciences, 32(4), 357–364.