Lilenbaum, Walter. “Leptospirosis on Animal Reproduction: IV. Serological Findings in Mares from Six Farms in Rio De Janeiro, Brazil (1993-1996)”. Brazilian Journal of Veterinary Research and Animal Science, vol. 35, no. 2, Jan. 1998, pp. 61-63, https://doi.org/10.1590/S1413-95961998000200002.