Falbo, M.K. et al. 2005. Hematologycal, biochemical, Urinary and histopathological changes in natural intoxication in bovine by bracken fern (Pteridium aquilinum) (L.) Kühn. Semina: Ciências Agrárias. 26, 4 (Jun. 2005), 547–558. DOI:https://doi.org/10.5433/1679-0359.2005v26n4p547.