Egnor, M.R. (1991/1992). (1991). "Vertebral Artery Aneurysm – A Unique Hazard of Head Banging by Heavy Metal Rockers". Pediatric Neurosurgery. 17 (3): 135–138. doi:10.1159/000120583. PMID1819327.{{cite journal}}: CS1 maint: numeric names: authors list (link)
Egnor, M.R. (1991/1992). (1991). "Vertebral Artery Aneurysm – A Unique Hazard of Head Banging by Heavy Metal Rockers". Pediatric Neurosurgery. 17 (3): 135–138. doi:10.1159/000120583. PMID1819327.{{cite journal}}: CS1 maint: numeric names: authors list (link)