1. Update on the epidemiology of MS;Wynn,1989
2. Slow virus infections of the nervous system;Field;Int Rev Exp Pathol,1969
3. Rida, a chronic encephalitis of sheep;Sigurdsson;Br Vet J,1955
4. Molecular structure, biology and genetics of prions;Prusiner;Adv Virus Res,1988
5. Unraveling prion diseases through molecular genetics;Westaway;TINS,1989