Silva, Carolina dos Santos, et al. “Anti-Leptospira Spp. Antibodies in Wild Animals from Ribeirão Preto City Zoo in São Paulo State, Brazil”. Brazilian Journal of Veterinary Research and Animal Science, vol. 47, no. 3, June 2010, pp. 237-42, https://doi.org/10.11606/issn.1678-4456.bjvras.2010.26862.