Tokarnia, Carlos Hubinger, et al. “Experimental Poisoning in Cattle by <i>Asclepias curassavica< I>”;. Pesquisa Agropecuaria Brasileira, vol. 7, no. 5, Apr. 2014, pp. 31-39, doi:10.1590/S1678-3921.pab1972.v7.17454.