Efficacy of marker vaccine candidate CP7_E2alf against challenge with classical swine fever virus isolates of different genotypes., Blome, Sandra, Gabriel Claudia, Schmeiser Stefanie, Meyer Denise, Meindl-Böhmer Alexandra, Koenen F., and Beer Martin , Vet Microbiol, 2014 Feb 21, Volume 169, Issue 1-2, p.8-17, (2014)