Orsi, R. de O., Barros, D. C. B., Silva, R. de C. M., Queiroz, J. V. de, Araújo, W. L. de P., & Shinohara, A. J. (2018). Toxic Metals in the Crude Propolis and Its Transfer Rate to the Ethanolic Extract. Sociobiology, 65(4), 640–644. https://doi.org/10.13102/sociobiology.v65i4.3379