1. Classification of headache;Ad Hoc Committee on Classification of Headache;JAMA,1962
2. Diagnostic and Statistical Manual of Mental Disorders;American Psychiatric Association,1994
3. Pressure-controlled palpation: A new technique which increases the reliability of manual palpation;Bendtsen;Cephalalgia,1995
4. Cluster headache in the Republic of San Marino;D'Alessandro;Cephalalgia,1986
5. Classification and diagnostic criteria for headache disorders, cranial neuralgias, and facial pain;Headache Classification Committee of the International Headache Society;Cephalalgia,1988