Motter, M. D. S., L. D. Silva, R. Borges-de-Oliveira, Áureo T. Yamada, S. C. Santos, and S. M. T. Sabóia-Morais. “Mitotic Index of Epithelia Cells in Gills of Guppy (Poecilia Vivipara) Exposed to Fractions of the Leaf and Bark of Pequi (Caryocar Brasiliensis)”. Brazilian Journal of Veterinary Research and Animal Science, vol. 41, no. 4, Aug. 2004, pp. 221-7, doi:10.1590/S1413-95962004000400001.