Tavares, K. P., de Oliveira, Ádria C., Vicentini, D. S., Melegari, S. P., Matias, W. G., Barbosa, S., & Kummrow, F. (2014). Acute toxicity of copper and chromium oxide nanoparticles to Daphnia similis. Ecotoxicology and Environmental Contamination, 9(1), 43–50. https://doi.org/10.5132/eec.2014.01.006