1. Assessment of seropositivity to porcine reproductive and respiratory syndrome (PRRS) virus in swine herds in Ontario–1978 to 1982;Carman;Can. Vet. J.,1995
2. Experimental reproduction of swine infertility and respiratory syndrome in pregnant sows;Christianson;Am. J. Vet. Res.,1992
3. Pathogenesis of porcine reproductive and respiratory syndrome virus infection in mid-gestation sows and fetuses;Christianson;Can. J. Vet. Res.,1993
4. Porcine reproductive and respiratory syndrome: a review;Christianson;Swine Health Prod.,1994
5. Persistence of porcine reproductive and respiratory syndrome virus in intensive farrow-to-finish pig herds;Chung;Can. J. Vet. Res.,1997