C. C. Baccili, N. M. Sobreira, B. T. Silva, E. M. Pituco, and V. Gomes, “Interface between Maternal Antibodies and Natural Challenge for Bovine Viral Diarrhea Virus (BVDV) in Holstein Heifers”, Acta Scientiae Vet., vol. 44, no. 1, p. 6, Jan. 2016.