1) Spetzler RF, Martin NA:A proposed grading system for arteriovenous malformations. J Neurosurg 65:476-483, 1986.
2) Yasargil MG:Microneurosurgery Vol IIIA. Stuttgart, George Thieme Verlag, 1987.
3) Guo Y, Saunders T, Su H, Kim H, Akkoc D, Saloner DA, Hetts SW, Hess C, Lawton MT, Bollen AW, Pourmohamad T, McCulloch CE, Tihan T, Young WL; University of California, San Francisco Brain Arteriovenous Malformation(UCSF bAVM)Study Project:Silent intralesional microhemorrhage as a risk factor for brain arteriovenous malformation rupture. Stroke 43:1240-1246, 2012.
4) Abla AA, Nelson J, Kim H, Hess CP, Tihan T, Lawton MT:Silent arteriovenous malformation hemorrhage and the recognition of "unruptured" arteriovenous malformation patients who benefit from surgical intervention. Neurosurgery 76:592-600, 2015.