Lorenzini, G. et al. 2007. Prevalence of intestinal parasites in dogs and cats under veterinary care in Porto Alegre, Rio Grande do Sul, Brazil. Brazilian Journal of Veterinary Research and Animal Science. 44, 2 (Apr. 2007), 137–145. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.2007.26652.