Duarte, Maria José de Faria, et al. “Prevalence and Intensity of Helminth Infection in Calves at Cantagalo, RJ, Brazil”. Pesquisa Agropecuaria Brasileira, vol. 17, no. 10, Apr. 2014, pp. 1521-4, doi:10.1590/S1678-3921.pab1982.v17.16338.