Camacho, A.A. and Biazzono, L. 1995. Sinus bradycardia in a collie dog with ivermectin toxicosis. Brazilian Journal of Veterinary Research and Animal Science. 32, 4 (Dec. 1995), 229–231. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52114.