Cruz, G. D., & Bracarense, A. P. F. R. L. (2004). Role of bracken fern (Pteridium aquilinum (L.) Kuhn) in animal and human heath. Semina: Ciências Agrárias, 25(3), 249–258. https://doi.org/10.5433/1679-0359.2004v25n3p249