Kich, Jalusa Deon, et al. “Assessment of Different Cut-off Values of the ELISA-Typhimurium for the Discrimination of Swine Herds With Salmonella Isolation”. Semina: Ciências Agrárias, vol. 37, no. 5, Oct. 2016, pp. 3107-14, doi:10.5433/1679-0359.2016v37n5p3107.