{{Cite journal| doi = 10.1024/1661-8157.96.19.775| issn = 1661-8157 (Print) 1661-8157 (Linking)| volume = 96| issue = 19| pages = 775–8| last1 = Schwarz| first1 = N.| last2 = Nohl| first2 = F.| last3 = Dang| first3 = L.| last4 = Hohl| first4 = U.| last5 = Mattle| first5 = H. P.| last6 = von Bredow| first6 = F.| last7 = Schiemann| first7 = U.| title = [Acute headache in a case of cerebral cavernomas]| journal = Praxis (Bern 1994)| date = 2007-06-19| pmid = 17571633}}