Zulpo, Dauton Luiz, et al. “Pathogenicity and Histopathological Observations of Commercial Broiler Chicks Experimentally Infected With Isolates of Eimeria Tenella, E. Acervulina and E. Maxima”. Semina: Ciências Agrárias, vol. 28, no. 1, July 2007, pp. 97-104, doi:10.5433/1679-0359.2007v28n1p97.