1. Headache and the greater occipital nerve;Anthony;Clin Neurol Neurosurg,1992
2. Classification and diagnostic criteria for headache disorder, cranial neuralgias and facial pain;Cephalgia,1988
3. Chronic daily headache including transformed migraine, chronic tension type headache, and medication overuse;Silberstein,2001
4. Migraine: diagnosis and treatment;Silberstein,2001
5. Daily chronic headache;Saper;Neurol Clin,1990