Pegoraro, E.J. et al. 2008. Italian ryegrass management, pasture larval contamination and parasitic infection in sheep. Pesquisa Agropecuaria Brasileira. 43, 10 (Oct. 2008), 1397–1403. DOI:https://doi.org/10.1590/S1678-3921.pab2008.v43.690.