Use of an internal standard in a closed one-tube RT-PCR for the detection of equine arteritis virus RNA with fluorescent probes David G. Westcott, Donald P. King, Trevor W. Drew, Norbert Nowotny, Johanna Kindermann, Duncan Hannant, Sándor Beláke and David J. Paton Vet. Res., 34 2 (2003) 165-176 DOI: 10.1051/vetres:2002063