1. Acheson, E. D.: The epidemiology of multiple sclerosis. In McAlpine, D., Lumsden, Ch. E., Acheson, E. D.: Multiple Sclerosis ? a Reappraisal 3?58. Livingstone 1965.
2. Adams, J. M., Brown, W. J.: Studies on inclusion bodies in early and late demyelinating disease. Pathogenesis and Etiology of Demyelinating Diseases. Add. ad. Int. Arch. Allergy 36, 83?101 (1969).
3. ? Imagawa, D. T.: Measles antibodies in multiple sclerosis. Proc. Soc. exp. Biol. (N.Y.) III, 3, 562 (1962).
4. Allison, R. S., Millar, J. H. D.: Prevalence of disseminated sclerosis in northern Ireland. Ulster med. J. Suppl. 2, 235 (1954); zit. n. McAlpine, Lumsden, Acheson.
5. Alter, M., Leibowitz, U., Halpern, L.: Clinical studies on multiple sclerosis in Israel. II. A comparison between European and Afro-Asian patients. J. Neurol. Neurosurg. Psychiat. 27, 522?529 (1964).