SIEVERS G, FUENTEALBA C. Comparison of the anthelmintic effectiveness of six commercial products containing macrocylic lactones against bovine gastrointestinal nematodes. Arch med vet [Internet]. 2003 Jun. 30 [cited 2024 Jul. 17];35(1):81-8. Available from: http://revistas.uach.cl/index.php/amv/article/view/4723