Quincozes, Caren Gularte, et al. “Prevalence and Factors Associated With Bovine Viral Diarrhea Virus Infection in South of Rio Grande Do Sul”. Semina: Ciências Agrárias, vol. 28, no. 2, Oct. 2007, pp. 269-76, doi:10.5433/1679-0359.2007v28n2p269.