Romero, E.C. et al. 1994. Search for agglutinating antibodies to Leptospira and Leptonema in horses, São Paulo, Brazil. Brazilian Journal of Veterinary Research and Animal Science. 31, 3-4 (Dec. 1994), 210–215. DOI:https://doi.org/10.11606/issn.1678-4456.bjvras.1994.52067.