Guida, H.G. et al. 2014. Investigations of <i>Trichomonas foetus</i> of bulls in the states of São Paulo, Minas Gerais, Rio de Janeiro and Guanabara, Brazil. Pesquisa Agropecuaria Brasileira. 7, 5 (Apr. 2014), 23–25. DOI:https://doi.org/10.1590/S1678-3921.pab1972.v7.17452.