ARHC - Gavier-Widen,D.; Noremark,M.; Benestad,S.L.; Simmons,M.; Renstrom,L.; Bratberg,B.; Elvander,M.; af Segerstad,C.H. - Recognition of the Nor98 variant of scrapie in the Swedish sheep population - Journal of Veterinary Diagnostic Investigation 2004 Nov; 16(6): 562-7