Coelho, Érico Lawrence Milen, et al. “Prevalence of Leptospirosis in Bovine Females Slaughtered in Slaughterhouse in the Municipality of São Luís, MA”. Brazilian Journal of Veterinary Medicine, vol. 36, no. 2, June 2014, pp. 111-5, https://bjvm.org.br/BJVM/article/view/510.