1. Aaslid R, Huber P, Nornes H (1982) Evaluation of cerebrovascular spasm with transcranial Doppler ultrasound. J Neurosurg 60: 37?41
2. Aaslid R, Markwalder TM, Nornes H (1982) Noninvasive transcranial Doppler ultrasound recording of flow velocity in basal cerebral arteries. J Neurosurg 57: 769?774
3. Bergvall U, Galera R (1969) Time relationship between subarachnoid hemorrhage, arterial spasm, changes in cerebral circulation and posthaemorrhagic hydrocephalus. Acta Radiol Diagnost 9: 229?237
4. Blaumanis OR, Grady PA, Nelson E (1979) Hemodynamic and morphologic aspects of cerebral vasospasm. In: Price TR, Nelson E (eds) Cerebrovascular Diseases. Raven Press, New York, pp 283?294
5. du Boulay GH (1980) Angiography ? the radiologists view. In: Boullin DJ (ed): Cerebral vasospasm. John Wiley & Sons, New York, pp 47?80