Virulence of vABV 414, the virus derived from the infectious cDNA clone of the Lelystad virus, for third trimester pregnant gilts P.J.G.M. Steverink, J.M.A. Pol, J.N.A. Bos-de Ruijter and J.J.M. Meulenberg Vet. Res., 31 1 (2000) 59-60 DOI: 10.1051/vetres:2000050