Genetic diversity of international bovine viral diarrhoea virus (BVDV) isolates: identification of a new BVDV-1 genetic groupStefan Vilcek, Branislav Durkovic, Mariana Kolesárová, Irene Greiser-Wilke and David PatonVet. Res., 35 5 (2004) 609-615DOI: https://doi.org/10.1051/vetres:2004036