Rankin J: Cerebral vascular accidents in patients over the age of 60. II. Prognosis. In: Scott Med J. 2. Jahrgang, Nr.5, Mai 1957, S.200–15, PMID 13432835.
van Swieten J, Koudstaal P, Visser M, Schouten H, et al.: Interobserver agreement for the assessment of handicap in stroke patients. In: Stroke. 19. Jahrgang, Nr.5, 1988, S.604–607, PMID 3363593.