Marques, Ana Luisa Alves, et al. “Risk Factors Associated With Bovine Viral Diarrhea Virus (BVDV) Infection in the Semiarid of the State of Paraíba, in the Northeast Region of Brazil”. Semina: Ciências Agrárias, vol. 37, no. 5, Oct. 2016, pp. 3095-06, doi:10.5433/1679-0359.2016v37n5p3095.