Fernandes, A. R. da, A. Fernandes, V. J. Araújo, S. Higino, M. L. Silva, C. J. Alves, and S. Azevedo. “Seroepidemiology of Canine Leptospirosis in the Metropolitan Area of Natal, Rio Grande Do Norte State”. Brazilian Journal of Veterinary Research and Animal Science, Vol. 50, no. 3, June 2013, pp. 226-32, doi:10.11606/issn.1678-4456.v50i3p226-232.