Tokarnia, Carlos Hubinger, et al. “Acute Bracken (<i>Pteridium Aquilinum < I>(L) Kuhn) Poisoning of Cattle in Brazil”. Pesquisa Agropecuaria Brasileira, vol. 2, no. 1, Apr. 2014, pp. 329-36, doi:10.1590/S1678-3921.pab1967.v2.17929.