Yoshihara, Eidi, et al. “In Vitro Ovicidal and Larvicidal Activity of Condensed Tannins on Gastrointestinal Nematode Infestations in Sheep (Ovis Aries)”. Semina: Ciências Agrárias, vol. 35, nº 6, dezembro de 2014, p. 3173-80, doi:10.5433/1679-0359.2014v35n6p3173.