Toro, A., L. Rubilar, C. Palma, and R. Pérez. 2014. “Anthelmintic Resistance of Gastrointestinal Nematode in Sheep Treated With Ivermectin and Fenbendazole”. Archivos De Medicina Veterinaria 46 (2):247-52. https://doi.org/10.4067/S0301-732X2014000200010.