Assessment of the clinical and virological protection provided by a commercial inactivated bovine viral diarrhoea virus genotype 1 vaccine against a BVDV genotype 2 challenge., Hamers, C, Couvreur B, Dehan P, Letellier C, Fischer L, Brun A J., Lewalle P, Michaux C, Pastoret P P., and Kerkhofs Pierre , Vet Rec, 2003 Aug 23, Volume 153, Issue 8, p.236-40, (2003)