Pinho, Ana Paula Vilhena Beckman, et al. “Serological Study of Brucellosis and Leptospirosis in Equines of Island Maiandeua (Algodoal) State of Pará”. Semina: Ciências Agrárias, vol. 35, no. 6, Dec. 2014, pp. 3221-30, doi:10.5433/1679-0359.2014v35n6p3221.