1. Walton JN. Subarachnoid haemorrhage. Edinburgh/London: E & S Livingston; 1956. p. 1–6.
2. Morgagni GB. De Sedibus et Causis Morborum per Anatomen Indagatis, Book 1, letters 3 and 4. Venetis, ex typog. Remodiniana, 1769. In: Alexander B, trans. The seats and causes of diseases investigated by anatomy. New York: Hafner; 1960. p. 42–43, p. 77–78.
3. Bull J. A short history of intracranial aneurysms. London Clin Med J. 1962;3:47–61.
4. Biumi F. Observationes anatomicae. Observatio V. In: Sandifort E, editor. Thesaurus dissertationum, vol. 3. Lugduni Batavorum: Lightmans; 1778. p. 373–9.
5. Blane G. History of cases of diseases in the brain. Trans Soc Improv Med Chir Knowl. 1880;2:192.